Perfluorochemical
[機] 全氟化化合物
??? 情景例句
I don't mind what you do.
你干什么事我都不在乎。
Pleased to meet you.
認識你很高興。
He told me that he could not go to sleep one night because he heard a strange noise coming from the bar.
他告訴我有天夜里他怎么也睡不著，因為他聽到酒吧里傳來一陣奇怪的響聲。