英语词汇on alert怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	on alert
释义	on alert alertvt. 使警觉，使意识到；警告 adj. 警惕的，警觉的... insularityn. 岛国岛国根性孤立偏狭 angularityn. 有角,生硬成,角状
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