know sth from sth Meaning in the Cambridge English Dictionary

Meaning of “know sth from sth” in the English Dictionary

"know sth from sth" in British English

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know sth from sth

phrasal verb with know uk   /nəʊ/  us   /noʊ/ verb (knew, known)
to ​know the ​difference between two things and ​therefore be ​able to ​recognize either, used ​especially to ​mean that you have a good ​knowledge and ​understanding of a ​particularsubject: Computer ​expert? He doesn't ​know a ​mouse from a ​modem! (= He ​knows nothing about ​computers.)
(Definition of know sth from sth from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Translations of “know sth from sth”
in Chinese (Simplified) 辨别, 识别…
in Chinese (Traditional) 辨別, 識別…
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