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English definition of “not know what hit you”

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not know what hit you

to feel shocked or confused because something bad has happened to you suddenly when you were not expecting it
Translations of “not know what hit you”
in Chinese (Traditional) 過度驚嚇而無法反應, 嚇呆了…
in Chinese (Simplified) 过度惊吓而无法反应, 惊呆了…
(Definition of not know what hit you from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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