Polyfluorohydrocarbon
[化] 多氟烃; 多氟代烃
🗣️ 情景例句
If you know a man's last name, address him as 'Mr.'.
如果你知道一个男性的姓， 应该用 'Mr。' 来称呼他。
How did you like the game?
你觉得这场比赛怎么样？
What you have just said does hurt him.
你刚才说的话真伤他的心了。