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English definition of “know what you are doing”

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know what you are doing

to have the skills and knowledge to do something effectively: You don't need to tell me - I know what I'm doing!
Translations of “know what you are doing”
in Chinese (Traditional) 掌握了有效地做某事的技能和知識…
in Chinese (Simplified) 掌握了有效地做某事的技能和知识…
(Definition of know what you are doing from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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