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Jyutping fong4 waan6 mei6 jin4
Pinyin fáng huàn wèi rán

Definitions (CC-CEDICT)
  1. to prevent troubles before the event (idiom)
  2. to forestall
  3. to nip sth in the bud
Definitions (粵典–words.hk)
  1. 語句
    喺​禍​患​未​發​生​之前​就​加以​防備
    to prevent trouble before it happens
  2. 參看
    防患於未然
Definitions (Wiktionary)
  1. phrase, idiomatic
    to take preventative measures before a disaster occurs; to prevent trouble before it happens
    (syn.) 防患于未然, 防患於未然
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)