Polyfluorohydrocarbon
[化] 多氟烃; 多氟代烃
🗣️ 情景例句
Good afternoon. Make yourself at home.
下午好。请随便些。
Do you have any seats?
你有座位吗？
Besides, this man is a clever thief.
另外，此人是个聪明的小偷。