| 单词 | act up |
| 释义 | act up[phrasal verb] 1 : to behave badly : to act in a way that is not polite or acceptable淘气；捣蛋
2 of a machine : to not work properly（机器）发生故障
3 of a disease : to become worse and to start causing pain or physical problems（疾病）发作
⇒ Main Entry: 2 act |
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