Pfoa
[医][=Perfluorooctanoic acid]全氟辛酸
🗣️ 情景例句
Pleased to meet you.
很高兴与你见面。
Would you speak a little louder?
请你说大声一点好吗？
Yes, that's a good idea. But I have another difficulty. My written English isn't very good either.
是的，这主意不错。但我还有另外一个难题。我的书面英语也不好。