Polyfluoroprene
聚氟丁二烯
🗣️ 情景例句
Where do people hang out on the weekend?
大家周末都去哪儿玩？
Did you criticize him for his mistakes?
你因为犯错误的事批评他了吗？
You'd better check with the shipper.
你最好向货运公司查查看。