Polydiolefin
聚二烯烃
🗣️ 情景例句
Harry, I get it!
Harry，我想到了！
Would you mind opening the window?
你介意开窗吗？
In the contrary school, the duck is supreme.
与滑翔鸟相对的另一类鸟中，数野鸭本领最高。