be on a high alert的意思|示意
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英 / /
保持高度警惕
be on a high alert的网络常见释义
高度戒备 ... maintain proper ventilation保持适当通风 be on a high alert高度戒备 be in operation操作中(运转中,生效,实施中) ...
be on a high alert相关例句
Whenever a film shows a close-up of a big animal like a bear, Palmer says, the viewer should be on alert: Chances are high that the animal came from a game farm or has been trained.
如果看到大型动物特写镜头的影片，比如熊，那么观众该注意了，很可能这些动物是饲养园里的或者曾受过训练。