Perfluorocarbon
全氟化碳
🗣️ 情景例句
Could human beings one day be built on a production line just like any other products?
人类是否有一天会如其它产品般在生产线上生产？
I wonder what happened to him.
我不知道他出什么事了。
Could you tell me where I can wash my hands?
请问洗手间怎么走？