Monochlorination
一氯化作用
🗣️ 情景例句
You may use a first name if you are asked to (call me …).
如果你得到允许的话，你便可以直呼某人的名字。
How long have you studied English?
你学英语多久了？
It's the library's. Please be more careful from now on!
“是图书馆的书。从现在起请你倍加小心！”