Perfluorochemical
[机] 全氟化化合物
🗣️ 情景例句
Have you ever been to a buffet dinner?
你去吃过自助餐吗？
Let me see your passport, please.
请让我看看你的护照。
Yes, very hard. Years of hard work, very little food, only a small cold room to live in and never a moment's rest.
是的，境况很不好。多年劳累，食不果腹，斗室寒舍，从无休息。