alert for中文什么意思

优先号码组

• alert:    adj. 1.警惕的，警觉的。 2. ...
• be alert to:    对…警觉; 对…警惕; 警觉
• be on the alert:    保持警惕; 处于戒备状态

例句与用法

更多例句：  下一页

1. They must be constantly on the alert for the enemy .
   他们必须随时注意敌人。
2. Her fears had always been on the alert for an upheaval .
   她日夜提心吊胆，严防突变。
3. To keep joe out of trouble, i am constantly alert for any deviation from normal .
   为了使乔免遭麻烦，我时刻警惕着任何异常情况。
4. We should be on alert for anything suspicious
   我们必须对任何可疑的事情保持警觉
5. You need to keep alert for lizards and rattlesnakes
   你必须提防蜥蜴和响尾蛇。