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speed speed ★★★★☆/spi͟ːd/The form of the past tense and past participle is sped in meaning 5 but speeded for the phrasal verb. 义项 5 的过去式和过去分词为sped，但在短语动词中则为 speeded。1[N-VAR	可变名词](运动、运行的)速度，速率 The speed of something is the rate at which it moves or travels.   [with supp]He drove off at high speed...他驱车飞驰而去。With this type of camera, the shutter speed is fixed...对这类相机而言，快门的速度是固定的。An electrical pulse in a wire travels close to the speed of light...电线里的电脉冲以接近光速的速度传输。Wind speeds reached force five.风速达到 5 级。2[N-COUNT	可数名词](某事发生或进展的)速度，进度 The speed of something is the rate at which it happens or is done.   [with supp]In the late 1850s the speed of technological change quickened...19 世纪 50 年代末期，技术变革的速度加快了。Each learner can proceed at his own speed.每一位学习者都可以按自己的进度学习。3[N-UNCOUNT	不可数名词](指运动、运行的)高速，快速 Speed is very fast movement or travel. Speed is the essential ingredient of all athletics...速度是所有田径运动项目的关键要素。He put on a burst of speed...他突然加速了。The car is quite noisy at speed.这辆车高速行驶时噪音很大。4[N-UNCOUNT	不可数名词](指某事发生或进展时的)高速，快速 Speed is a very fast rate at which something happens or is done.   [usu N of n/-ing]I was amazed at his speed of working.他办事之麻利让我深感叹服。...the sheer speed of the unification process.统一进程速度惊人5[VERB	动词](尤指坐车)快速行进 If you speed somewhere, you move or travel there quickly, usually in a vehicle.   [V prep/adv]Trains will speed through the Channel Tunnel at 186mph...火车将以每小时 186 英里的速度快速穿过海峡隧道。The engine noise rises only slightly as I speed along.我一路高速行驶时，发动机的噪音只提高了一点点。6[VERB	动词](驾车者)超速行驶 Someone who is speeding is driving a vehicle faster than the legal speed limit.   [V]  [usu cont]This man was not qualified to drive and was speeding.这名男子没有驾驶资格，并且违章超速行驶。speedingHe was fined for speeding last year.他去年因超速行驶被罚了款。7[N-UNCOUNT	不可数名词]安非他明(一种兴奋剂) Speed is an illegal drug such as amphetamine which some people take to increase their energy and excitement.   [INFORMAL 非正式]8See also:-speed；  9 to pick up speed→see: pick； 10[PHRASE	短语]掌握最新情况的 If you are up to speed, you have all the most recent information that you need about something.   [oft PHR on n]A day has been set aside to bring all councillors up to speed on the proposal...已经确定了一个日子，届时将向所有的市政委员汇报有关该建议的最新进展情况。Those in charge deluded themselves they were up to speed.那些负责人自以为掌握了最新情况。相关词组：speed up  speed1 nounspeed2 verbspeedspeed1 /spiːd/ ●●● S2 W1 noun  Entry menu Word Origin Examples Thesaurus Collocations Phrases Word family 1of movement [countable, uncountable] the rate at which something moves or travels:  The truck was travelling at a speed of 50 mph. particles that travel at the speed of light.RegisterIn everyday English, people usually talk about how fast something or someone is rather than using the noun speed: What speed was he going? ➔ How fast was he going?2of action [countable, uncountable] the rate at which something happens or is donespeed of the speed of change within the industry a high-speed computer The population was growing at great speed.3fast [uncountable] the quality of being fast:  The women’s basketball team has talent, speed, and power.with speed She acted with speed and efficiency.at speed British English a van travelling at speed4photography [countable] a)the degree to which photographic film is sensitive to light b)the time it takes for a camera shutter to open and close:  a shutter speed of 1/250 second5drug [uncountable] informal an illegal drug that makes you very active  SYN  amphetamine6five-speed/ten-speed etc having five, ten etc gears:  a ten-speed bike7up to speed having the latest information or knowledge about something:  Some school officials are only now getting up to speed regarding computers. John will bring you up to speed (=tell you the latest information). → full speed/steam aheadat full1(18)COLLOCATIONS– Meanings 1 & 2verbsincrease your speed· He increased his speed until he was running flat out.gain/gather/pick up speed (=go faster)· The Mercedes was gradually picking up speed.reach a speed· The trains will reach speeds of 140 mph.maintain a speed (=keep the same speed)· The aircraft is designed to maintain a steady speed.reduce speed (=slow down deliberately)· She reduced speed as she approached the village.lose speed (=slow down without wanting to)· The engine made a strange sound and we lost speed.ADJECTIVES/NOUN + speedan average speed· Our average speed was 88 mph.a constant/steady speed· The disc revolves at a constant speed.a top/maximum speed (=the highest possible)· The car has a top speed of 132 mph.wind speed (=the speed of the wind)· The average wind speed will be about 14 knots.air speed (=the speed of a plane in relation to the air around it)phrasesat high/great speed· The train was travelling at high speed.at low/slow speed· Even at low speed, an accident could mean serious injury for a child.at full speed (=running, driving etc as fast as possible)· He ran past us at full speed.at/with lightning speed (=very quickly)· He moved with his usual lightning speed.at breakneck speed (=very quickly)· He drove away at breakneck speed.speed + NOUNa speed limit· The speed limit is 40 mph here.a speed restriction· New speed restrictions have been introduced.a speed camera (=designed to photograph vehicles going too fast)· Most GPS systems will warn you when there are speed cameras.speed1 nounspeed2 verbspeedspeed2 ●○○ verb (past tense and past participle sped /sped/ or speeded)  Verb Table Examples Thesaurus Collocations Phrases Word family 1[intransitive always + adverb/preposition] to go quickly:  The car sped along the dusty highway.2[transitive always + adverb/preposition] to take someone or something somewhere very quickly:  An ambulance sped her to the hospital.3be speeding to be driving faster than the legal limit:  I got caught speeding on the A40 yesterday.4 (also speed something ↔ up) [transitive] to make something happen faster  OPP  slow down:  This news should speed his recovery.speed by phrasal verb if time speeds by, it seems to pass very quickly:  The weeks sped by and soon it was time to go back to school.speed up phrasal verb to move or happen faster, or to make something move or happen faster  OPP  slow down:  The truck speeded up going down the hill.speed something ↔ up The new system will speed up the registration process.

Accepted Answer

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             speed              ★                    /        spiːd                ;          NAmE                spiːd                /                              noun                ,                  verb                            speed      speeds      sped      speeded      speeding                            noun        ★                    rate of movement/action        运动╱行动速率                    1        ★                  [countable                ,         uncountable          ]                          the rate at which sb/sth moves or travels            （运动的）速度，速率                                    ◆          He reduced speed and turned sharp left.          他减慢速度，向左急转。                          ◆          The train began to            pick up speed            (= go faster).                    火车开始加速。                          ◆          The car was            gathering speed.                    汽车逐渐加速。                          ◆          a            speedof 50 mph/80 kph                    每小时 50 英里╱ 80 公里的速度                          ◆          at            high/low/full/top speed                    以高╱低╱全╱最高速                          ◆                      at breakneck speed            (= fast in a way that is dangerous)                    以不要命的速度                          ◆          travelling at            the speed of light/sound                    以光速╱音速行进                          ☞see also                                                    airspeed                                              ,                                                    ground speed                                                                2        ★                  [countable                ,         uncountable          ]                          the rate at which sth happens or is done            （发生或进行的）速度；进度                                    ◆          the processing speed of the computer          计算机的处理速度                          ◆          This course is designed so that students can progress at their own speed.          这门课的设计思路是让学生自己掌握进度。                          ◆          We aim to increase the speed of delivery            (= how quickly goods are sent).                    我们力争加快送货速度。                            3        ★                  [uncountable          ]                          the quality of being quick or rapid            快；迅速                                    ◆          The accident was due to excessive speed.          事故的原因在于速度过快。                          ◆          She was overtaken by the            speed of events            (= things happened more quickly than she expected).                    事态发展迅速为她始料所不及。                          ◆          (            formal)                    A car flashed past them            at speed            (= fast).                    一辆汽车从他们身边疾驰而过。                            in photography        摄影                    4                  [countable          ]                          a measurement of how sensitive film for cameras, etc. is to light            感光度                                      5                  [countable          ]                          the time taken by a camera            shutterto open and close            快门速度                                    ◆          shutter speeds          快门速度                            on bicycle/car        自行车；汽车                    6                  [countable          ]                          (            especially in compounds              尤用于构成复合词            )                    a gear on a bicycle, in a car, etc.            排挡；速                                    ◆          a four-speed gearbox          有四挡的变速箱                          ◆          a ten-speed mountain bike          十速山地自行车                            drug        毒品                    7                  [uncountable          ]                          (            informal)                    an illegal            amphetaminedrug that is taken to give feelings of excitement and energy            苯丙胺，安非他明（一种兴奋剂）                                      IDIOMS              full speed/steam aˈhead                              with as much speed or energy as possible              全速（或全力）向前                                                  up to ˈspeed (on sth)                  1                      (of a person, company, etc.            人、公司等            )                                performing at an expected rate or level              （在某事上）达到应有的速度，达标                                            ◆            the cost of              bringingthe chosen schools              up to speed                        使选定的学校达标所需的费用                                    2                      (of a person            人            )                                having the most recent and accurate information or knowledge              了解最新情况；跟上形势                                            ◆            Are you up to speed yet on the latest developments?            你了解最新的进展情况吗？                                      ☞more at                                    haste                              ,                                    turn                                   n.                                  verb        ★                    (              speed·ed        ,        speed·ed            )                      HELP       In senses 1 and 2      spedis also used for the past tense and past participle.      作第 1 及第 2 义时，过去时和过去分词也用 sped。              move/happen quickly        快速运动╱发生                    1                  [intransitive          ]                + adv./prep.                  (            formal)                    to move along quickly            快速前行                                    ◆          He sped away on his bike.          他飞快地骑着车走了。                            2                  [transitive          ]                          speedsb/sth + adv./prep.                          (            formal)                    to take sb/sth somewhere very quickly, especially in a vehicle            快速运送                                    ◆          The cab speeded them into the centre of the city.          出租汽车载着他们迅速驶往市中心。                            3                  [transitive          ]                          speedsth                          (            formal)                    to make sth happen more quickly            加速；促进                                    ◆          The drugs will speed her recovery.          这些药会加速她的康复。                            drive too fast        超速驾驶                    4                  [intransitive          ]                          (            usually used in the progressive tenses              通常用于进行时            )                    to drive faster than the speed that is legally allowed            超速驾驶；超速行驶                                    ◆          The police caught him speeding.          警察发现他超速行驶。                                    PHRASAL VERB                    ★        ˌspeed ˈup | ˌspeed sth↔ˈup                              to move or happen faster; to make sth move or happen faster              （使）加速                                            ◆            The train soon speeded up.            火车很快加速了。                                ◆            Can you try and              speed things upa bit?                        你能不能设法加快一点事情的进度？                                          speed              /        spiːd                ;          NAmE                spiːd                /             www.ankiedu.club

word	speed
content	RDnBsBRHX1LUaMRnRIQME1kJzdg799HCtw0Avwa05Dbi2jHN159g6RcJ6S14T0l2i0m5dkLlXU1kivOr2qf7zKdxzvRaZj6yq6jOTe2dlhlOPqQOcDjQyUW96rfizsCNekgVOMB9UeZrDG85L+0iQEhbuS4pXQFkBC6VAIT/80UnF+5EcSgwUz3XvrJ2xS0L2wiAW69WgpIRbZIKd5ur7ekih54fWL6FtYlpOnLS1gLDDb1P4ra+eoo1bykJE2xfU49b8QmACB+e8gmMlzzmZtXAWzL8rbZLLzRI0jrKmZ8oUSspDKQKi3nPLLy4su1N6bAclu6vi0793VtM2VQa3AaAbOyfXciGWv4yAN+LfrctHfUMTtyjt6Bya/nf2HJoXZAB6RPt8vkd06HPlqkF57BAdzyLmf9pjYFqybN1NJ7oPkWKsshnnfAci2USY6dJxYfYgbLyek5J/qj8Bz1tq3wUj8oseN0khqNu57kE8GdVQZMoYRfj+CVw+i62Z7dZYfM6N5Ox7S6dKFLuDqmpAMkOI1mrvLuV7JScFSfmdoVPdfz2DfktVohBIvjF9FH0oPkKM91/C5PruZLyu0M2ZOT+WBjkIuuRO7IpXLL5F/WlSQjFuTlR00RTLxgtU15Swqbx0sqs6AwDJzUUGgyL+BO+SQO5grlhj0+GKntc8TSYT5EAZmrPVa8TOMuXO4WueTYugJ6cGTjnek1MX/JQBA1YcEGNA9KoGPZCyd4r/o0EfCNWUdg0exbniZCFV1tb6u8O/oZyd9sddUq9uII4I11hAeWJIFnW2VxeA9I/AI5lNtjbc8fnjW/VuMmuLrUl1Tr+VpS6T1uYV8ieUkW+dvwUc+S2z3A9sT7owQqA4L2boPganFKHl2tyHxZ/6f9SqytQp15j5I969zXrwIwZNpioMBgghkmpRumaxqJba9ghGkJOKBwPzDptDD2Sq5mq8XeWOcTXhxsf4/vGDa5HT8W/iMeP4WUlf5KB9nwNLm1+oYevq1hAenw2YOQM9DCvWyigl/3u2RCtWOF8IF7QRfKuh51fgq+AhLfIUx94gsNMTHXf6LXhIxp9U9DqfWjyzCb9/j/HoYX1+LT8mU7N9pzNC4jajbqbm91ZbrQV/3B+EbbLemrwLuCJ8Q9SjfrDy84ORQGvY3WqjKOJXjLA9NXMb+Dnm2mymqzG4Pt8UHmL7wdJuCR4pMHPyHClRdUy1YrGWg7SHBotAIW2zu2z62p9tKb4Ne3NmZYGCELpuDEsU34DG6EnDDGDRl3vuKj9X//nC3ePnO1t5/5C+Lfv+Qb6QDQu9pf/oYKOWBl1Xf5no64KJ5i3eYAVQP1k54ZS+esglHigUhKNidIdvpVYnqtibIc0E7YeZoVJGs0nqafM7xJARRTYKWIZEknQj3rytGIaUiHQqnBA7w9pw/sCIntkQGo4XpHJAWJG+oPyuPxB2EFJKL/v/Y6QOvu9hSCK
Collins	speed ★★★★☆ /spi͟ːd/ The form of the past tense and past participle is sped in meaning 5 but speeded for the phrasal verb. 义项 5 的过去式和过去分词为sped，但在短语动词中则为 speeded。 1 [N-VAR 可变名词](运动、运行的)速度，速率 The speed of something is the rate at which it moves or travels. [with supp] He drove off at high speed... 他驱车飞驰而去。 With this type of camera, the shutter speed is fixed... 对这类相机而言，快门的速度是固定的。 An electrical pulse in a wire travels close to the speed of light... 电线里的电脉冲以接近光速的速度传输。 Wind speeds reached force five. 风速达到 5 级。 2 [N-COUNT 可数名词](某事发生或进展的)速度，进度 The speed of something is the rate at which it happens or is done. [with supp] In the late 1850s the speed of technological change quickened... 19 世纪 50 年代末期，技术变革的速度加快了。 Each learner can proceed at his own speed. 每一位学习者都可以按自己的进度学习。 3 [N-UNCOUNT 不可数名词](指运动、运行的)高速，快速 Speed is very fast movement or travel. Speed is the essential ingredient of all athletics... 速度是所有田径运动项目的关键要素。 He put on a burst of speed... 他突然加速了。 The car is quite noisy at speed. 这辆车高速行驶时噪音很大。 4 [N-UNCOUNT 不可数名词](指某事发生或进展时的)高速，快速 Speed is a very fast rate at which something happens or is done. [usu N of n/-ing] I was amazed at his speed of working. 他办事之麻利让我深感叹服。 ...the sheer speed of the unification process. 统一进程速度惊人 5 [VERB 动词](尤指坐车)快速行进 If you speed somewhere, you move or travel there quickly, usually in a vehicle. [V prep/adv] Trains will speed through the Channel Tunnel at 186mph... 火车将以每小时 186 英里的速度快速穿过海峡隧道。 The engine noise rises only slightly as I speed along. 我一路高速行驶时，发动机的噪音只提高了一点点。 6 [VERB 动词](驾车者)超速行驶 Someone who is speeding is driving a vehicle faster than the legal speed limit. [V] [usu cont] This man was not qualified to drive and was speeding. 这名男子没有驾驶资格，并且违章超速行驶。 speeding He was fined for speeding last year. 他去年因超速行驶被罚了款。 7 [N-UNCOUNT 不可数名词]安非他明(一种兴奋剂) Speed is an illegal drug such as amphetamine which some people take to increase their energy and excitement. [INFORMAL 非正式] 8 See also:-speed ； 9 to pick up speed→see: pick ； 10 [PHRASE 短语]掌握最新情况的 If you are up to speed, you have all the most recent information that you need about something. [oft PHR on n] A day has been set aside to bring all councillors up to speed on the proposal... 已经确定了一个日子，届时将向所有的市政委员汇报有关该建议的最新进展情况。 Those in charge deluded themselves they were up to speed. 那些负责人自以为掌握了最新情况。相关词组： speed up
Oxford	speed ★ / spiːd ; NAmE spiːd / noun , verb speed speeds sped speeded speeding noun ★ rate of movement/action 运动╱行动速率 1 ★ [countable , uncountable ] the rate at which sb/sth moves or travels （运动的）速度，速率 ◆ He reduced speed and turned sharp left. 他减慢速度，向左急转。 ◆ The train began to pick up speed (= go faster). 火车开始加速。 ◆ The car was gathering speed. 汽车逐渐加速。 ◆ a speedof 50 mph/80 kph 每小时 50 英里╱ 80 公里的速度 ◆ at high/low/full/top speed 以高╱低╱全╱最高速 ◆ at breakneck speed (= fast in a way that is dangerous) 以不要命的速度 ◆ travelling at the speed of light/sound 以光速╱音速行进 ☞see also airspeed , ground speed 2 ★ [countable , uncountable ] the rate at which sth happens or is done （发生或进行的）速度；进度 ◆ the processing speed of the computer 计算机的处理速度 ◆ This course is designed so that students can progress at their own speed. 这门课的设计思路是让学生自己掌握进度。 ◆ We aim to increase the speed of delivery (= how quickly goods are sent). 我们力争加快送货速度。 3 ★ [uncountable ] the quality of being quick or rapid 快；迅速 ◆ The accident was due to excessive speed. 事故的原因在于速度过快。 ◆ She was overtaken by the speed of events (= things happened more quickly than she expected). 事态发展迅速为她始料所不及。 ◆ ( formal) A car flashed past them at speed (= fast). 一辆汽车从他们身边疾驰而过。 in photography 摄影 4 [countable ] a measurement of how sensitive film for cameras, etc. is to light 感光度 5 [countable ] the time taken by a camera shutterto open and close 快门速度 ◆ shutter speeds 快门速度 on bicycle/car 自行车；汽车 6 [countable ] ( especially in compounds 尤用于构成复合词 ) a gear on a bicycle, in a car, etc. 排挡；速 ◆ a four-speed gearbox 有四挡的变速箱 ◆ a ten-speed mountain bike 十速山地自行车 drug 毒品 7 [uncountable ] ( informal) an illegal amphetaminedrug that is taken to give feelings of excitement and energy 苯丙胺，安非他明（一种兴奋剂） IDIOMS full speed/steam aˈhead with as much speed or energy as possible 全速（或全力）向前 up to ˈspeed (on sth) 1 (of a person, company, etc. 人、公司等 ) performing at an expected rate or level （在某事上）达到应有的速度，达标 ◆ the cost of bringingthe chosen schools up to speed 使选定的学校达标所需的费用 2 (of a person 人 ) having the most recent and accurate information or knowledge 了解最新情况；跟上形势 ◆ Are you up to speed yet on the latest developments? 你了解最新的进展情况吗？ ☞more at haste , turn n. verb ★ ( speed·ed , speed·ed ) HELP In senses 1 and 2 spedis also used for the past tense and past participle. 作第 1 及第 2 义时，过去时和过去分词也用 sped。 move/happen quickly 快速运动╱发生 1 [intransitive ] + adv./prep. ( formal) to move along quickly 快速前行 ◆ He sped away on his bike. 他飞快地骑着车走了。 2 [transitive ] speedsb/sth + adv./prep. ( formal) to take sb/sth somewhere very quickly, especially in a vehicle 快速运送 ◆ The cab speeded them into the centre of the city. 出租汽车载着他们迅速驶往市中心。 3 [transitive ] speedsth ( formal) to make sth happen more quickly 加速；促进 ◆ The drugs will speed her recovery. 这些药会加速她的康复。 drive too fast 超速驾驶 4 [intransitive ] ( usually used in the progressive tenses 通常用于进行时 ) to drive faster than the speed that is legally allowed 超速驾驶；超速行驶 ◆ The police caught him speeding. 警察发现他超速行驶。 PHRASAL VERB ★ ˌspeed ˈup \| ˌspeed sth↔ˈup to move or happen faster; to make sth move or happen faster （使）加速 ◆ The train soon speeded up. 火车很快加速了。 ◆ Can you try and speed things upa bit? 你能不能设法加快一点事情的进度？ speed / spiːd ; NAmE spiːd /
LDC	speed1 noun speed2 verb speedspeed1 /spiːd/ ●●● S2 W1 noun Entry menu Word Origin Examples Thesaurus Collocations Phrases Word family 1of movement [countable, uncountable] the rate at which something moves or travels: The truck was travelling at a speed of 50 mph. particles that travel at the speed of light.RegisterIn everyday English, people usually talk about how fast something or someone is rather than using the noun speed: What speed was he going? ➔ How fast was he going?2of action [countable, uncountable] the rate at which something happens or is donespeed of the speed of change within the industry a high-speed computer The population was growing at great speed.3fast [uncountable] the quality of being fast: The women’s basketball team has talent, speed, and power.with speed She acted with speed and efficiency.at speed British English a van travelling at speed4photography [countable] a)the degree to which photographic film is sensitive to light b)the time it takes for a camera shutter to open and close: a shutter speed of 1/250 second5drug [uncountable] informal an illegal drug that makes you very active SYN amphetamine6five-speed/ten-speed etc having five, ten etc gears: a ten-speed bike7up to speed having the latest information or knowledge about something: Some school officials are only now getting up to speed regarding computers. John will bring you up to speed (=tell you the latest information). → full speed/steam ahead at full1(18) COLLOCATIONS– Meanings 1 & 2verbsincrease your speed· He increased his speed until he was running flat out.gain/gather/pick up speed (=go faster)· The Mercedes was gradually picking up speed.reach a speed· The trains will reach speeds of 140 mph.maintain a speed (=keep the same speed)· The aircraft is designed to maintain a steady speed.reduce speed (=slow down deliberately)· She reduced speed as she approached the village.lose speed (=slow down without wanting to)· The engine made a strange sound and we lost speed.ADJECTIVES/NOUN + speedan average speed· Our average speed was 88 mph.a constant/steady speed· The disc revolves at a constant speed.a top/maximum speed (=the highest possible)· The car has a top speed of 132 mph.wind speed (=the speed of the wind)· The average wind speed will be about 14 knots.air speed (=the speed of a plane in relation to the air around it)phrasesat high/great speed· The train was travelling at high speed.at low/slow speed· Even at low speed, an accident could mean serious injury for a child.at full speed (=running, driving etc as fast as possible)· He ran past us at full speed.at/with lightning speed (=very quickly)· He moved with his usual lightning speed.at breakneck speed (=very quickly)· He drove away at breakneck speed.speed + NOUNa speed limit· The speed limit is 40 mph here.a speed restriction· New speed restrictions have been introduced.a speed camera (=designed to photograph vehicles going too fast)· Most GPS systems will warn you when there are speed cameras. speed1 noun speed2 verb speedspeed2 ●○○ verb (past tense and past participle sped /sped/ or speeded) Verb Table Examples Thesaurus Collocations Phrases Word family 1[intransitive always + adverb/preposition] to go quickly: The car sped along the dusty highway.2[transitive always + adverb/preposition] to take someone or something somewhere very quickly: An ambulance sped her to the hospital.3be speeding to be driving faster than the legal limit: I got caught speeding on the A40 yesterday.4 (also speed something ↔ up) [transitive] to make something happen faster OPP slow down: This news should speed his recovery.speed by phrasal verb if time speeds by, it seems to pass very quickly: The weeks sped by and soon it was time to go back to school.speed up phrasal verb to move or happen faster, or to make something move or happen faster OPP slow down: The truck speeded up going down the hill.speed something ↔ up The new system will speed up the registration process.
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Speed Fast Quickly Sped Rate Past The Faster