Perfluoro-
[化] 全氟; 全氟代
🗣️ 情景例句
Come on, Philip!
快点， Philip。
Whose responsibility are the shipment charges?
运费由谁来负责呢？
I've got a problem and as I don't know what to do I thought I'd write to you and ask for your advice.
我有一个问题，因为我不知道该怎么办。我想我最好写信给你，征求你的意见。