Perfluorochemical
[机] 全氟化化合物
🗣️ 情景例句
She exchanged a few words with the foreigner.
她和那个外国人交谈了几句。
Is this OK?
这样行吗？
family, finances and what you want from your investments.
家庭、财源和你想从投资中获得的好处的信息。