Fluorocarbons
(fluorocarbon 的复数) [建] 碳氟化合物
🗣️ 情景例句
Do you mind if I smoke?
我抽烟你介意吗？
What were you doing this time last year?
去年这时候你在干什么？
All we have to do is sign the contract.
剩下的只要签订个契约就行了。