Polyfluoroethylene
聚氟乙烯
🗣️ 情景例句
It is already.
现在已经很兴奋了
Our sweetest songs are those that tell of saddest thought.
最甜美的的歌是诉说最悲伤的哀思。
It's a part-time job, so I only work evenings.
这是份兼职，因此我只是晚间上班。