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词汇 alert
释义
alert
adjective uk/əˈlɜːt/ us/əˈlɝːt/
C1 机警的,机敏的,敏捷的
quick to see, understand, and act in a particular situation
I'm not feeling very alert today - not enough sleep last night! 今天我感觉特迟钝——昨晚没睡好!
A couple of alert readers posted comments on the website pointing out the mistake. 有几个眼尖的读者在网上发表评论,指出了这个错误。
Parents should be alert to sudden changes in children's behaviour. 父母应该对孩子行为的突然变化有所警觉。
    更多例句
  • Doing puzzles and crosswords regularly keeps your mind alert and active.
  • Although Granny was frail in her old age, but was mentally very alert.
  • He was normally a bright, alert baby, so she felt sure there was something seriously wrong.
  • A small animal must always remain alert for predators.
  • There have been some thefts recently, so please stay alert and don't leave handbags and valuables around.
Related word: alertness
alert
noun uk/əˈlɜːt/ us/əˈlɝːt/
C1 [ C or U ]警报
a warning to people to be prepared to deal with something dangerous
a bomb alert 炸弹警报
The army was put on (full) alert as the peace talks began to fail. 当和谈开始破裂的时候,军队进入(全面)戒备状态。
The public were warned to be on the alert for (= watching carefully for) suspicious packages. 有关部门提醒公众,要警惕可疑包裹。
alert
verb [ T ] uk/əˈlɜːt/ us/əˈlɝːt/
C2 使警觉,使警惕;向…发出警报
to warn someone of a possibly dangerous situation
An anonymous letter alerted police to the possibility of a terrorist attack at the airport. 有人给警察写了一封匿名信,警告机场可能会受到恐怖袭击。
    更多例句
  • If you hear a flood warning, please alert your neighbours and make emergency preparations.
  • Until I saw my statement, there was nothing to alert me that someone else was using my credit card number.
  • We encourage parents to alert the school about any concerns or difficulties at home.
  • We don't want to alarm people unnecessarily, but they should be alerted to potential dangers.
  • A note of formality in his voice alerted her to the fact that others were listening.
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