Perfluorokerosene (pfk)
[化] 全氟煤油
🗣️ 情景例句
I'm a workaholic, so for me vacations are very boring.
我是个工作狂！度假对我来说太无聊了！
It's nothing to get upset about.
没什么，用不着烦恼。
Don't let this get you down.
不要为此灰心丧气。