Indolyl
[化] 吲哚基(有7种异构体)
🗣️ 情景例句
It's no use crying over spilt milk. What's done cannot be undone.
覆水难收。
When the tree is fallen, every one runs to it with his axe.
大树一倒下，人人持斧来。
Can't you come in and have tea now, Peter?
彼得，你现在能进来喝茶吗？