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
You're welcome.
别客气，欢迎你再来。
I think that should do it.
我想这样就可以了。
she has to help with the washing.
她得帮忙洗衣服。