| 词汇 | be playing at something | 
| 释义 | be playing at something idiom UK   乱搞,瞎弄 If you ask what someone is playing at, you are angry because they are doing something stupid.  What on earth/the hell were you playing at? - You could have got us all killed! 你到底在瞎搞什么?你差点把我们都害死了!  | 
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