她不得不忍住不笑那个不合时宜的笑话。

She had to refrain from laughing at the inappropriate joke.

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She had to refrain from laughing at the inappropriate joke.

refrain 是动词,意思是"忍住、克制",通常指克制自己不做某事。refrain from 是一个固定搭配,表示"忍住不做..."。

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