| 词汇 | button your lip | 
| 释义 | button your lip idiom  informal (also keep your lip buttoned)   保持缄默;不再说话 to say nothing or stop talking  He didn't want to get into a fight, so he decided to button his lip. 他不愿意卷入一场争执,于是决定保持缄默。  | 
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