Perfluorokerosene (pfk)
[化] 全氟煤油
🗣️ 情景例句
Hello, Harry. It's nice to meet you.
你好 Harry 很高兴见到 。
A great ship asks deep water.
巨轮寻深水而航行。
But this does not matter, for, as he has often remarked, one is never too old to learn.
但这没有关系，因为正如他常说的那样，人要活到老学到老。