Fluocarbon
氟代烴
??? 情景例句
His personality left a deep impression on us.
他的人品給我留下了深刻的印象。
You don't have to play that record/CD so loud, do you?
你不一定要把唱片放得那么響，對吧？
Oh, I'm sorry to hear that.
噢，真遺憾。