catalytic active site

例句：

1. 1. The enzyme is a molecule that speeds up chemical reactions.
   酶是一种加速化学反应的分子。
2. 2. The catalyst helps the reaction to occur more quickly.
   催化剂帮助反应更快地发生。
3. 3. The scientist discovered a new type of catalyst that could be used in industry.
   科学家发现了一种可以在工业中使用的新型催化剂。