Perfluoroparaffin
全氟烃
🗣️ 情景例句
OK. We'll walk back to your office with you.
好吧 ，我们陪你走回你的办公室去。
My salary doesn't keep up with inflation.
我的工资跟不上通货膨胀。
No, I don't think we have been.
不，我想没有。