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Jyutping mei6 jin4
Pinyin wèi rán

Definitions (CC-CEDICT)
  1. in advance
  2. before it happens (cf preventative measures)
  3. forestalling
Definitions (Wiktionary)
  1. verb, literary
    to be as yet unfulfilled
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)