Perfluamine
全氟三丙烷
🗣️ 情景例句
Good afternoon. What's the trouble?
下午好。有什么不舒服吗？
Can you guess what I was doing this morning?
你能猜测我今早正在做什么吗？
I'll have to check to see if we can handle that.
我得查查看我们是否付得了这么多。、