be on one's guard against saying the wrong thing 提防说错话 * put sb on his guard 使某人提防 * The lawyer's seemingly innocent question caught the witness off his guard.
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... place a guard at the door在门口布岗 put sb on his guard使某人提防〔警惕〕 stand guard for sb为某人站岗〔放哨〕 ...
基于2个网页-相关网页