Polyfluocarbon
[化] 多氟烃
🗣️ 情景例句
Pretty good, but I got caught in a traffic jam in Beijing.
很好，不过在北京碰上了交通阻塞。
I can give you quarters, if that'll help.
如果2角5分的硬币管用的话，我可以给你换一些。
Where are the cups?
茶杯在哪儿呢？