n.催化剂；刺激因素
War is a catalyst to help them to choose. 战争是一副催化剂来帮助他们选择。
Debate is the best catalyst of thought. 争论是思想最好的催化剂。
This tragedy will be a catalyst for good. 这场悲剧会是美好的催化剂。
The results were then used to make better car catalyst. 这一研究的成果可随后用于生产出效果更好的汽车催化剂。
催化剂
n.光催化剂(光触媒)
n.反催化剂
