on the alert中文什么意思

处于戒备状态

警惕着

密切注意着

随时准备着

• alert:    adj. 1.警惕的，警觉的。 2. ...
• alert for:    优先号码组
• be alert to:    对…警觉; 对…警惕; 警觉

例句与用法

更多例句：  下一页

1. Hearing this , i was instantly on the alert .
   我一听这话，当下就警惕起来。
2. They must be constantly on the alert for the enemy .
   他们必须随时注意敌人。
3. Old jolyon was on the alert at once .
   老乔里恩立刻警觉起来。
4. Her fears had always been on the alert for an upheaval .
   她日夜提心吊胆，严防突变。
5. The sentries were all on the alert .
   哨兵们都警戒着。