| 词汇 | act up |
| 释义 | ● ˌact ˈup (informal ) to behave badly 表现不好；捣乱◆ The kids started acting up . 孩子们开始调皮捣蛋起来。to not work as it should 出毛病◆ How long has your ankle been acting up ? 你的脚踝受伤多久了？See also act |
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