know what you are talking about Meaning in the Cambridge English Dictionary
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Meaning of “know what you are talking about” in the English Dictionary

"know what you are talking about" in British English

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know what you are talking about

C1 to ​understand a ​subject because of ​yourexperience: He doesn't know what he's ​talking about - he's never ​even been to ​Africa.
(Definition of know what you are talking about from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"know what you are talking about" in American English

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know what you are talking about

to be ​able to ​speak in an ​informed way because of ​yourexperience or ​education: He doesn’t know what he’s ​talking about – he’s never ​even been to Alaska.
(Definition of know what you are talking about from the Cambridge Academic Content Dictionary © Cambridge University Press)
Translations of “know what you are talking about”
in Chinese (Simplified) 作经验之谈…
in Chinese (Traditional) 作經驗之談…
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