Poly(vinyl fluoride)
[化] 聚氟乙烯
🗣️ 情景例句
Is there a limit to how many I can purchase at this price?
我买这种东西在数量上有什么限制吗？
Peter began to hear about the interesting new play.
彼德开始听到新放映的电视剧很精彩。
No, it isn't! That's a cat!
不，不在！那是一只猫。