Polyfluorocarbon
[化] 多氟烃; 多氟代烃
🗣️ 情景例句
Your bride is really beautiful
你的新娘非常漂亮。
I've lived here for five years.
我住在这里有5年的时间了。
The rope had been cut, so it was obvious that the lamb had been stolen.
绳子被人割断，很明显小羔羊是被人偷走了。