柯林斯詞典enzyme /??nza?m/ (enzymes) 1. N-COUNT An enzyme is a chemical substance found in living creatures that produces changes in other substances without being changed itself. 酶[技術(shù)] 返回 enzyme劍橋詞典any of a group of chemical substances that are produced by living cells and cause particular chemical reactions to happen while not being changed themselves 酶 An enzyme in the saliva of the mouth starts the process of breaking down the food . 由于唾液中酶的作用，食物進(jìn)入口腔時(shí)就開始了分解過程。 返回 enzyme