Polyfluocarbon
[化] 多氟烃
🗣️ 情景例句
Nowadays many TV programs need parental guidance.
现在许多电视节目需要在家长指导下观看。
First catch your hare, then cook him.
不要谋之过早。
As a matter of fact, it is the other way around.
事实上，情况正好相反。