Polysubstitution
多取代(作用)
🗣️ 情景例句
I've got it!
有啦！
Everything is good when new, but friend when old.
东西新的好，朋友老的好。
Yes, please. But why do you call them mooncakes?
行啊，请给我一个吧。但你们为什么叫它月饼？