one-liner       
noun [ C ]  informal uk/ˌwʌnˈlaɪ.nər/ us/ˌwʌnˈlaɪ.nɚ/
 (单句的)俏皮话,打趣话;小笑话
a joke or a clever and funny remark or answer that is usually one sentence long
  There are some very witty one-liners in the play. 这部电影中有些非常诙谐的俏皮话。 
 
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