Polyfluoroethylene
聚氟乙烯
🗣️ 情景例句
Yes, but the number's no longer in service.
打过，但那个号码是空号。
What is wealth good for,If it brings melancholy?
财富如带忧郁来，有了财富有何用？
Don't be so childish.
别这么孩子气。