| 释义 |
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 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。 |