Perhalogeno-
[化] 全卤(代)(代替所有C上的氢)
🗣️ 情景例句
we're not sure
我们还不能肯定
Some persons do first, think afterwards, and then repent for ever.
有些人做了再思考，从而悔恨终身。
Hubei? I can't find it. Where is it?
湖北？我找不到，在哪儿？