Polyfluoroethylene
聚氟乙烯
🗣️ 情景例句
Scene: Tom and his wife have invited Carl and David for dinner.
场景：汤姆和他夫人邀请卡尔和大卫吃晚饭。
Yes, I'm applying to work at the library.
是的，我在申请图书馆管理员的工作。
Look at the sun! It's very bright.
瞧，阳光灿烂！