Pfoa
[医][=Perfluorooctanoic acid]全氟辛酸
🗣️ 情景例句
He always seems such a happy guy.
他似乎永远是个快乐的人。
When does it arrive?
什么时候到那儿？
She picked it up and gave it back to me.
她把它捡起给了我。