Fluorene
芴
🗣️ 情景例句
so that we don't have to worry about any structural problems.
我们就可以不用担心任何结构上的问题。
I know the boy whose father is a professor.
我知道那个男孩的父亲是大学教授。
Another man lit a cigarette but it burnt strangely and so he too put it out.
另一个工人点燃一支烟，但烟燃得怪怪的，于是他也把烟灭了。