catalyst

1. N-COUNT You can describe a person or thing that causes a change or event to happen as a catalyst. 催化剂

I very much hope that this case will prove to be a catalyst for change. 我非常希望这件事终将成为促成变化的催化剂。

2. N-COUNT In chemistry, a catalyst is a substance that causes a chemical reaction to take place more quickly. 催化剂