Cocatalyst
助催化剂
🗣️ 情景例句
This is Susan with Jiaotong University student. May I have your name, sir?
我是交通大学的在校生苏珊，请问您贵姓？
How long will you be in?
你将进去多久？
How many musicians are you bringing?
你打算带多少乐师来？