约定俗成

[yuē dìng sú chéng]

established by usage

约定俗成[yuēdìngsúchéng]

-establishedbythepeoplethroughlongsocialpractice;Anagreementhasbecomeapractice.;acceptedduetocustoms;acceptedthroughcommonpractice;establishedbyusage;thecommonrunofmankind

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