释义
n. 催化剂
例句
1. The offer of a new job provided just the catalyst she needed.
这份新工作正是她所需要转变的契机。
2. A substance, especially an enzyme, that initiates or modifies the rate of a chemical reaction in a living body; a biochemical catalyst.
生物催化剂能在活的体内产生化学反应或改变生物体内化学反应速度的物质，尤指酶；生物化学催化剂