英语词汇“know what they are doing”的读音、翻译、释义、用法及例句-青年旅行网

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词汇	know what they are doing
释义	(redirected from know what they are doing) know what (one) is doing To be adequately prepared or knowledgeable enough to do something. You really shouldn't be handling those power tools unless you know what you're doing.
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know what (one) is doing