Pentafluorinated
五氟化的
🗣️ 情景例句
I think you should take the highway all the way, and I'd advise you to avoid stopping to go sight-seeing.
我认为你最好全程走高速公路，而且我建议你不要停下来看风景。
Thank you.
谢谢您。
Oh good. Come in. I'm his son.
好吧，请进。我是他的儿子。