约定俗成
yuē​dìng​sú​chéng HSK7

convention

  • created sense approved 约定俗成/約定俗成 · yuē​dìng​sú​chéng · convention

    约定俗成 / 約定俗成

    yuē​dìng​sú​chéng

    convention

    established by popular usage or long-standing social custom rather than by formal decree

    语言中的许多词汇和表达方式都是约定俗成的。

    idiom

    created sense