Perfluoropropane
[机] 八氟丙烷
🗣️ 情景例句
I haven't got a clue on how to spend the National Day holiday.
如何度过国庆假期我还没有一点头绪。
I'm sick.
我病了。
I like writing to my penfriend, but it takes a lot of time.
我喜欢给笔友写信，但那很花时间。