Cocatalyst
助催化剂
🗣️ 情景例句
you know how Dad is always talking about
知道爸爸时常谈起
First, I would like to express to all of you here our sincere welcome.
首先，我向在坐的诸位表示诚挚的欢迎。
I' d like to study medicine and become a doctor.
我想学医，当个医生。