[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]警觉的；警惕的；留神的；机敏的 If you are alert, you are paying full attention to things around you and are able to deal with anything that might happen.
We all have to stay alert...
我们大家都必须保持警惕。
He had been spotted by an alert neighbour.
一个警觉的邻居发现了他。
alertness
The drug improved mental alertness.
该药有助于提神。
2
[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]充分意识到…的；完全感觉到…的 If you are alert to something, you are fully aware of it.
[v-link ADJ to n]
The bank is alert to the danger.
银行充分意识到了危险。
3
[N-COUNT 可数名词]警戒（状态）；戒备（状态） An alert is a situation in which people prepare themselves for something dangerous that might happen soon.
Due to a security alert, this train will not be stopping at Oxford Circus.
由于安全戒备的原因，该次列车在“牛津街口广场”站将不停留。
4
[VERB 动词]向…报警；使警觉；使警惕；使注意 If you alert someone to a situation, especially a dangerous or unpleasant situation, you tell them about it.
[V n to n]
[V n]
He wanted to alert people to the activities of the group...
他想提醒人们小心该团体的活动。
I was hoping he'd alert the police.
我当时希望他会报警。
5
See also:
red alert
；
6
[PHRASE 短语]处于警戒状态；保持戒备 If soldiers or police are on alert, they are ready to deal with anything that may happen.
[PHR after v]
Soldiers and police have been put on alert.
士兵和警方都已进入警戒状态。
7
[PHRASE 短语]准备就绪；防备着 If you are on the alert for something, you are ready to deal with it if it happens.
[PHR after v]
They want to be on the alert for similar buying opportunities.
他们希望随时掌握有关类似购买机会的信息。
Oxford
alert/əˈlɜːt; NAmEəˈlɜːrt/
adjective
,
verb
,
noun
alertalertsalertedalertingadjective1able to think quickly; quick to notice things 警觉的；警惕的；戒备的◆Suddenly he found himself awake and fully alert.突然他发觉自己醒了过来，而且高度警觉。◆Two alert scientists spotted the mistake.两个警觉的科学家发现了这个错误。2alertto sth aware of sth, especially a problem or danger 意识到；注意到◆We must be alert to the possibility of danger.我们必须认识到危险的可能性。▶alert·ly/əˈlɜːtli; NAmEəˈlɜːrtli/adjectivealert·ness/əˈlɜːtnəs; NAmEəˈlɜːrtnəs/noun[uncountable ]verb[often passive ]1alertsb (to do sth) |alertsb (that)… to warn sb about a dangerous or urgent situation 向…报警；使警觉；使警惕；使戒备◆Neighbours quickly alerted the emergency services.邻居很快向紧急情况中心报了警。◆Alerted by a noise downstairs, he sat up and turned on the light.楼下的响声使他警觉，他坐起来打开灯。2alertsb to sth to make sb aware of sth 使意识到；使认识到◆They had been alerted to the possibility of further price rises.他们已意识到价格可能继续上涨。noun1[singular , uncountable ]a situation in which people are watching for danger and ready to deal with it 警戒；戒备；警惕◆Police are warning the public to be on the alert forsuspicious packages. 警方警告公众要警惕可疑包裹。◆More than 5 000 troops have been placed on (full) alert.*5 000 多名士兵已处于（全面）戒备状态。 2[countable ]a warning of danger or of a problem 警报◆a bomb/fire alert炸弹╱火警警报☞see also
1giving all your attention to what is happening, being said etc: The animal raised its head, suddenly alert. Taking notes is one of the best ways to stay alert in lectures.2able to think quickly and clearly: Jack was as mentally alert as a man half his age.3be alert to something to know about or understand something, especially a possible danger or problem: The authorities should have been alert to the possibility of invasion.—alertness noun [uncountable]
alert1 adjective
alert2 verb
alert3 noun
alertalert2 ●●○ verb [transitive]
Verb Table
Examples
Thesaurus
Collocations
Phrases
1to officially warn someone about a problem or danger so that they are ready to deal with it: The school immediately alerted the police.► see thesaurus at
warn
2to make someone realize something important or dangerousalert somebody to something campaigns to alert the public to the dangers of HIV
alert1 adjective
alert2 verb
alert3 noun
alertalert3 noun
Examples
Thesaurus
Collocations
Phrases
1[countable] a warning to be ready for possible dangera bomb/fire/terrorist etc alert a full-scale flood alert The bomb alert was raised soon after midnight. →
red alert
2on (the) alert (for something/somebody) ready to notice and deal with a situation or problem: Be on the alert for anyone acting suspiciously. Troops in the vicinity were put on alert.on full alert (also on high alert) (=completely ready to deal with a dangerous situation) All our border points are on full alert.
WDF
alert
[əˈlɜ:t]alerted, alerting, alerts
CET4CET6TEM4考研GRETOEFL
n10215
1699
568
139
418
376
198
v5378
4596
776
1122
1169
875
654
j5712
4238
1074
979
990
721
474
NOUN4759
202778
VERB5081
183325
ADJ5535
157803
Spoken:
197320414
alerted[1906] alerting[473] alerts[553]
警报(42%)，警惕(38%)，警戒(12%)，警觉的(5%)，使意识到(2%)，灵敏的(1%)
n.警戒，警惕；警报
adj.警惕的，警觉的；留心的
vt.警告；使警觉，使意识到
n.(Alert)人名；(西)阿莱尔特
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.