Regioselectivity
[化] 区域专一性; 区域选择性
🗣️ 情景例句
Sheet is a five-letter word. Sheet
是五个字母的单字。
Don't worry. You'll get used to it in no time.
别担心，你很快就会习惯的。
I don't know. I think he's very old.
不知道。我想他年纪一定很大了。