Neoflon
四氟乙烯-全氟丙烯共聚物(氟塑料46)
🗣️ 情景例句
No. It's not.
不是。
As soon as I get to Guangzhou, I'll drop you a line.
我一到达广州，就给你写信。
Economy is one powerful motive for camping, since after the initial outlay upon equipment,
图省钱是露营的一个主要动机，因为除了开始时购置或是租借一套露营装备外，