Perfluorokerosene (pfk)
[化] 全氟煤油
🗣️ 情景例句
How long are you going to stay here?
您在这里呆多久？
Please call before you come,otherwise we might not be home.
请在你来前打一下电话来,否则我们可能不在家。
I'm glad our negotiation has come to a successful conclusion.
我很高兴这次洽谈圆满成功。