[N-COUNT 可数名词](电路的)开关，闸，转换器 A switch is a small control for an electrical device which you use to turn the device on or off.
Leona put some detergent into the dishwasher, shut the door and pressed the switch.
利昂娜将一些清洁剂放入洗碗机，关上门后按了开始键。
...a light switch.
电灯开关
2
[VERB 动词]转换；改变；转变 If you switch to something different, for example to a different system, task, or subject of conversation, you change to it from what you were doing or saying before.
[V to n]
[V from n to n]
[V pl-n]
[Also V]
[V P to n]
[Also V P]
[usu with supp]
Estonia is switching to a market economy...
爱沙尼亚正在向市场经济转轨。
The law would encourage companies to switch from coal to cleaner fuels...
该法律将鼓励企业转而使用比煤更加清洁的能源。
The encouragement of a friend spurred Chris into switching jobs.
在一位朋友的鼓励下，克理斯换了工作。
Switch is also a noun.
New technology made a switch to oil possible...
新技术使得转而使用石油成为可能。
The spokesman implicitly condemned the United States policy switch.
发言人含蓄地谴责了美国政策上的转变。
Switch over means the same as switch .switch over 同 switch
...a professional man who started out in law but switched over to medicine.
开始学法律后转而从医的专业人士
3
[V-ERG 及物/不及物动词]转移(注意力)；(注意力)转变 If you switch your attention from one thing to another or if your attention switches, you stop paying attention to the first thing and start paying attention to the second.
[V to n]
[V n to n]
My mother's interest had switched to my health...
母亲转而关注起我的健康来。
As the era wore on, she switched her attention to films.
随着这个时代慢慢过去，她把目光投向了电影业。
4
[VERB 动词]交换；调换；对调 If you switch two things, you replace one with the other.
[V pl-n]
In half an hour, they'd switched the tags on every cable...
半个小时内，他们就给每根电缆都换了标签。
The ballot boxes have been switched.
投票箱被人调换了。
相关词组：
switch off
switch on
switch over
Oxford
switch★/swɪtʃ; NAmEswɪtʃ/
noun
,
verb
switchswitchesswitchedswitchingnoun★1★a small device that you press or move up and down in order to turn a light or piece of electrical equipment on and off （电路的）开关，闸，转换器◆a light switch电灯开关◆an on-off switch通断开关◆That was in the days before electricity was available at the flick of a switch.那是在过去，还没有到开关一响就有电的时代。◆Which switch do I press to turn it off?我按哪个开关就能把它关了？◆to throw a switch (= to move a large switch)扳动开关2a change from one thing to another, especially when this is sudden and complete （尤指突然彻底的）改变，转变switch(in/of sth) ◆a switch of priorities轻重缓急的改变switch(from A to B) ◆She made the switch from full-time to part-time work when her first child was born.第一个孩子出生后她就从全职工作改为兼职工作。◆a policy switch政策的转变3( NAmE) the pointson a railway/railroad line （铁路的）转辙器，道岔4a thin stick that bends easily （细软）枝条；鞭子◆a riding switch马鞭verb★1★[intransitive , transitive ]to change or make sth change from one thing to another （使）改变，转变，突变switch(over) (from sth) (to sth) ◆We're in the process of switching over to a new system of invoicing.我们正在转用新的发票制度。switchbetween A and B ◆Press these two keys to switch between documents on screen.按这两个键就可以在屏幕上的文件之间切换。switchsth (over) (from sth) (to sth) ◆When did you switch jobs?你什么时候调动工作的？2[transitive ]to exchange one thing for another 交换；掉换；转换；对调SYN
swap
switchsth ◆The dates of the last two exams have been switched.最后两门考试的日期掉换了。switchsth over/around/round ◆I see you've switched the furniture around (= changed its position).我看出来你把家具重摆了。switchsth with sth ◆Do you think she'll notice if I switch my glass with hers?要是把我的杯子跟她的换了，你认为她看得出来吗？3[intransitive , transitive ]to do sb else's job for a short time or work during different hours so that they can do your job or work during your usual hours 调班；临时掉换工作时间SYN
swap
switch(with sb) ◆I can't work next weekend—will you switch with me?下个周末我不能上班，咱俩调个班好不好？switchsth (with sb) ◆Have you been able to switch your shift with anyone?你找着能跟你调班的人了吗？switch(sth) (over/around/round) ◆Can we switch our shifts around?我们可以换个班吗？PHRASAL VERBSˌswitch ˈoff( informal) to stop thinking about sth or paying attention to sth 不再想着；不再注意；失去兴趣◆When I hear the word ‘football’ I switch off (= because I am not interested in it).我听见“足球”两个字就腻味。◆The only time he really switches off (= stops thinking about work, etc.)is when we're on vacation. 只有在我们外出度假的时候，他才真正无牵无挂。★ˌswitch ˈoff/ˈon | ˌswitch sth↔ˈoff/ˈonto turn a light, machine, etc. off/on by pressing a button or switch 关╱开（电灯、机器等）◆Please switch the lights off as you leave.你离开的时候请把灯关了。◆How do you switch this thing on?这东西怎么开？ˌswitch ˈover | ˌswitch sth↔ˈover( BrE) to change stations on a radio or television 换台；换频道switch/swɪtʃ; NAmEswɪtʃ/
LDC
switch1 verb
switch2 noun
switchswitch1 /swɪtʃ/ ●●●S2W3 verb
Verb Table
Examples
Thesaurus
Collocations
Phrases
1[intransitive, transitive] to change from doing or using one thing to doing or using anotherswitch to She worked as a librarian before switching to journalism.switch from something to something Duval could switch easily from French to English.switch between something and something He switches between TV and theatre work. The terrorists will switch tactics.switch sides/allegiance (=start supporting a different person, party etc) He switched sides just days before the election.switch attention/focus/emphasis We want to switch focus away from criticism.2[transitive] to replace one thing with another, or exchange thingsSYN changeswitch something for something Tim may switch his BMW for something else.switch something from something to something We’ve switched the meeting from Tuesday to Thursday.switch something around It’s not easy to switch clerical workers around.3[intransitive, transitive] American English if you switch with someone who does the same job as you, you exchange your working times with theirs for a short timeSYN swapswitch with Tom said he’d switch with me on Saturday. He asked if we could switch shifts.4[transitive always + adverb/preposition] to change the way a machine operates, using a switchswitch something to something Switch the freezer to ‘defrost’.COLLOCATIONSnounsswitch sides (=start supporting someone or something else)· Three senators switched sides and voted for the ban.switch (your) allegiance (=start supporting someone else)· Most of his supporters had switched their allegiance to his rival.switch channels (=start watching a different TV channel)· Rod switched channels with the remote control.switch tactics· Sensing that his victim was going to escape him, he switched tactics.switch your attention/focus to something· Laura wasn't interested so he switched his attention to Tessa.switch brands· 46% of consumers surveyed were likely to switch brands to support companies they saw as socially responsible,the emphasis switches/is switched to something· The emphasis has switched to defence.switch off phrasal verb1to turn off a machine, light, radio etc using a switchswitch something ↔ off The burglar alarm was switched off. Don’t forget to switch off before you go.2informal to stop listening to someone: He just switches off and ignores me.3to relax for a short time: Switch off by listening to music.switch on phrasal verbto turn on a machine, light, radio etc using a switchswitch something ↔ on He switched the torch on. The lights switch on automatically when it gets dark.switch over phrasal verb1to change from one method, product etc to anotherswitch over to We’ve switched over to telephone banking.2to change the television channel you are watching or the radio station you are listening toswitch over to Switch over to BBC 2.
switch1 verb
switch2 noun
switchswitch2 ●●●S3 noun [countable]
Entry menu
Word Origin
Examples
Thesaurus
Collocations
Phrases
1on/off a piece of equipment that starts or stops the flow of electricity to a machine, light etc when you push it: Where’s the light switch? an on–off switchpress/flick/throw etc a switch Tom flicked the switch, but nothing happened. She claims she is willing to throw the switch of the electric chair.at the flick of a switch (=very quickly and easily, by pressing a switch) Petrol can be chosen at the flick of a switch.2change [usually singular] a complete change from one thing to another: an important policy switchswitch from/to the switch from agriculture to dairy productionswitch in a switch in emphasis More shoppers are making the switch to organic food.that’s a switch American English spoken informal (=used to say that someone’s behaviour is different from usual) ‘Ed’s the only one who’s not eating.’ ‘That’s a switch!’3railway American English a piece of railway track that can be moved to allow a train to cross over from one track to another4stick old-fashioned a thin stick that bends easilyCOLLOCATIONSverbspress a switch· He pressed a switch on the wall and the door opened.flick/flip a switch (=move it so something starts or stops)· You start the fan by just flipping this switch.throw a switch (=move it so something starts or stops, especially something big)· Could a nuclear war really be started by someone just throwing a switch?ADJECTIVES/NOUN + switcha light switch· He reached for the light switch.a dimmer switch (=a switch that can change the brightness of a light)an on-off switch· I couldn’t find the on-off switch.the power switch· They have reverted to placing the mains power switch at the back of the unit.the mains switch (=one that controls the supply of electricity to a house)· The mains switch is located inside a cupboard near the front door.phrasesat the flick/touch of a switch (=very quickly and easily, with a switch)· The advantages of having electricity available at the flick of a switch are obvious.
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