Pyromucylanhydrin
焦粘酐
🗣️ 情景例句
About eight o'clock?
差不多八点钟好吗？
I meet the boy whose aunt is a librarist.
我遇到那个男孩的姑妈是图书管理员。
Do you want to have lunch with us?
你跟我们一起吃午饭好吗？