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English definition of “you have no idea”

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you have no idea

said for emphasis when you are describing how good or bad an experience is: Flying a plane is wonderful, you have no idea. You have no idea how embarrassed I was.
Translations of “you have no idea”
in Chinese (Traditional) (表示強調)你不知道,你難以想像…
in Chinese (Simplified) (表示强调)你不知道,你难以想象…
(Definition of you have no idea from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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