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    1. 首頁英語詞典precursorprecursor英英釋意

      precursor

      英 [pr?'k??s?] 美[pri'k?s?]
      • n. 先驅,前導

      英英釋意


      1. a substance from which another substance is formed (especially by a metabolic reaction)
      2. a person who goes before or announces the coming of another
      3. an indication of the approach of something or someone