Polyfluorocarbon
[化] 多氟烃; 多氟代烃
🗣️ 情景例句
but ... well, there are too many things to do.
但是……我要做的事情太多了。
Please contact me when you come home.
你回到家时请跟我联系。
Sorry, he's not at home.
对不起，他不在家。