alert
alert
a∙lert¹ / əˈlɚt ; əˈlɜ:t /
◙adj
1. giving all your attention to what is happening, being said etc
• 警惕的，警觉的:
»The animal raised its head, suddenly alert.
那只动物抬起头，突然警觉起来。
»Taking notes is one of the best ways tostay alertin lectures.
记笔记是听课集中注意力的最佳方法之一。
2. able to think quickly and clearly
• 机警的，机敏的:
»Jack was asmentally alertas a man half his age.
杰克的头脑和年龄小他一半的人一样灵活。
3. be alert to sth, to know about or understand something, especially a possible danger or problem
• 警觉某事:
»The authorities should have beenalert to the possibilityof invasion.
当局早就应该认识到入侵的可能性了。
♦alertnessnoun [U]
alert²
◙verb [T]
1. to officially warn someone about a problem or danger so that they are ready to deal with it
• 使警觉; 向…发出警报:
»The school immediatelyalerted the police.
学校立即报了警。
2. to make someone realize something important or dangerous
• 提醒，引起〔某人〕重视:
»alert sb to sth
»campaigns to alert the public to the dangers of HIV
使公众认识到艾滋病病毒危险的宣传活动
alert³
◙noun
1. [C] a warning to be ready for possible danger
• 警报:
»a bomb / fire / terrorist etc alert
»a full-scale flood alert
最高级别的防洪警报
»The bomb alert was raised soon after midnight.
刚过子夜，防空警报就拉响了。
--› see RED ALERT
2. on (the) alert (for sth / sb), ready to notice and deal with a situation or problem
• （对某事物/某人）保持警惕:
»Be on the alertfor anyone acting suspiciously.
警惕举止可疑的人。
»Troops in the vicinity wereput on alert.
附近地区的军队受命进入戒备状态。
on full alert also on high alert (=completely ready to deal with a dangerous situation) 全面戒备
»All our border points are on full alert.
我们所有的边防站都处于全面戒备状态。
