柯林斯词典enzyme /ˈɛnzaɪm/ (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[技术] 返回 enzyme剑桥词典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，食物进入口腔时就开始了分解过程。 返回 enzyme