Proactivator
前活化剂; 前致活剂; 激活剂前体
🗣️ 情景例句
The newspapers don't come out till about ten o'clock.
报纸要差不多十点钟才出来。
May I reconfirm my flight?
我可以确认我的班机吗？
That's a great idea!
好主意！