Perfluorokerosene (pfk)
[化] 全氟煤油
🗣️ 情景例句
and then we'll go back to my house.
然后回到我家。
A crow is never the whiter for washing herself often.
乌鸦不管怎样经常洗澡，也不会变白。
I usually come by bus. What about you?
我平常乘公共汽车。你呢？