台Taivo A Taiwan Mandarin dictionary

約定俗成

yuēdìngsúchéng

ㄩㄝ ㄉㄧㄥˋ ㄙㄨˊ ㄔㄥˊ

Simplified 约定俗成

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  1. 1established by popular usage (idiom); common usage agreement
  2. 2customary convention

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