funny business
noun [ U ] uk/ˈfʌn.i ˌbɪz.nɪs/ us/ˈfʌn.i ˌbɪz.nɪs/
欺骗;不正当行为
dishonest actions or behaviour intended to trick someone
If you try any funny business you'll be sorry. 你要是想搞什么鬼名堂,你一定会后悔的。
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