Cfcs
高中 Senior Highabbr. 氟氯化碳, 氯氟烃（chlorofluorocarbon）
🗣️ 情景例句
I think I'm quite proficient in both written and spoken English.
我认为我在英语读写方面相当熟练。
For my math requirements, I'll be taking algebra, calculus, and trig.
数学的必修学分预定选代数、微积分、三角法。
still persists, however; and it is as fierce as it ever was.
依然在进行着，而且和以前一样激烈。