on (the) alert (for something/somebody)

READYready to notice and deal with a situation or problem （对某事物/某人）保持警惕

Be on the alert for anyone acting suspiciously.

警惕举止可疑的人。

Troops in the vicinity were put 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。

Examples from the Corpus

on high alert• Early in the war Soviet southern troops were put on high alert.

→ on (the) alert (for something/somebody) at alert3(1)

词汇	on (the) alert (for something/somebody)
释义	on (the) alert (for something/somebody) on (the) alert (for something/somebody) READYready to notice and deal with a situation or problem （对某事物/某人）保持警惕 Be on the alert for anyone acting suspiciously. 警惕举止可疑的人。 Troops in the vicinity were put 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。 Examples from the Corpus on high alert• Early in the war Soviet southern troops were put on high alert. → on (the) alert (for something/somebody) at alert3(1)
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