Polyfluorocarbon
[化] 多氟烃; 多氟代烃
🗣️ 情景例句
It was for a good reason.
你今天早走是有原因的。
How long will it take me to get there?
到那儿要多长时间？
Stories about people often attract far more public attention than political events.
常人轶事往往比政治事件更能引起公众注意。