Catalysts
n. <化>催化剂( catalyst的复数形式 ); 触媒; 促进因素; 有感染力的人
🗣️ 情景例句
Take care, and have a nice flight.
请保重！祝你一路顺风！
John stopped to study.
约翰停下来去学习。
Look out! There is a car coming.
小心，车来了。