Pfoa
[医][=Perfluorooctanoic acid]全氟辛酸
🗣️ 情景例句
The pleasure is mine.
认识你是我的荣幸。
The last drop makes the cup run over.
失之过极。
Were you in San Francisco at the time of the big earthquake in 1989?
1989年旧金山大地震时，你在那儿吗？