Polyfluoride
多氟化物
🗣️ 情景例句
Relax with the family and then look for some work.
与家人轻松一段时间 ，然后找个工作。
If I buy tha car,I'll have to borrow some money.
如果我买了那汽车，我将不得不借一些钱。
They rode their respective bikes.
他们各自骑着自己的自行车。