Chlorofluorocarbons
n. <化>含氯氟烃（即破坏臭氧层的CFC）( chlorofluorocarbon的复数形式 )
🗣️ 情景例句
I don't know about that.
我表示怀疑。
To step on
踩到
Franz poured scorn on the idea, pointing out that his brother had been killed in action during the war.
弗朗兹对此不屑一顾，指出他兄弟已经在战争中阵亡了。