any of a group of chemical substances which are produced by living cells and which cause particular chemical reactions to happen while not being changed themselves
发音
例句
1. Above a certain temperature, the enzyme molecule will become unfolded. 超过一定温度,酶分子将会展开。 2. An enzyme that dissolves the fibrin of blood clots. 能溶解血凝块中的纤维的酶。