Polyfluorocarbon
[化] 多氟烃; 多氟代烃
🗣️ 情景例句
I got a college education by joining the military
我参军而上的大学。
Me too. I was hoping we could put this bicycle together for Tom's birthday.
我也希望如此，我本来希望买这辆自行车做为送给汤姆的生日礼物。
I can't get down.
我下不来了。