Perfluorocarbon
全氟化碳
🗣️ 情景例句
A little further back, Tom.
再往后一点 Tom。
My handkerchif is grey.
我的手帕是灰色的。
(Looking at the other woman) I'm sorry, but I don't think I know you.
（瞅着玛蒂尔德）很抱歉，我想我不认识你呀。