| 词汇 | be on guard |
| 释义 | Idiom be on guardbe on (your) guard to be careful to avoid being tricked or getting into a dangerous situation.I feel I have to be on my guard with her because she's always trying to get information out of me.Shop assistants must always be on guard against shoplifters. (often + against)be on guardTo be very attentive and alert, so as to avoid danger in a particular situation. A possessive pronoun can be used between "on" and "guard." When you're in the big city, you need to be on guard against criminals. I'm on my guard because I know the older guys on the team are going to prank me. |
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