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English definition of “not that I know of”

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not that I know of

used when answering a question to mean that, judging from the information you have, the answer is no: "Is she especially unhappy at school?" "Not that I know of."
Translations of “not that I know of”
in Chinese (Traditional) 據我所知並非如此,據我所知沒有…
in Chinese (Simplified) 据我所知并非如此,据我所知没有…
(Definition of not that I know of from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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