Prefractionation
初步分馏
🗣️ 情景例句
Sure. Oh, sorry, Mary, I'd better go now.
可以。哦，抱歉，Mary，我要挂电话了。
It is easy to open a shop but hard to keep it always open.
开设店铺易，维持常开难。
I think she is at home.
我想她在家里吧。