Polyhydroxylation
多羟基化反应
🗣️ 情景例句
I'm pooped.
我精疲力尽。
Would you hold the line, please, I will find out his number for you.
请你不要挂断，我替你找他的号码。
Are you ready to place your order now?
你们准备好下订单了吗？