| 词汇 | drop/lower your guard |
| 释义 | drop/lower your guard idiom C2 警惕，提防；警戒 to stop being careful to avoid danger or difficulty Once he knew I wasn't a journalist, he dropped his guard and even let me take a photograph of him. 当他知道我不是记者的时候，他立刻放松了警惕，甚至让我为他照相。 |
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