Epimerization
差向[立体]异构(作用)
🗣️ 情景例句
Will you help me if I do run?
假如我真的竞选 ，你会帮我忙吗？
I'm sure he will get to the party on time.
我确定他会准时参加宴会。
I always go to work by car.
我总是开车上班。