Petroleum polymer
[机] 石油聚合物
🧩 词语组成解析
🗣️ 情景例句
What are some of the other sports products you're making?
你们现在还生产哪些运动产品？
If the old dog barks,he gives counsel.
老狗叫，是忠告。
Someone is ringing the bell.
有人在按门铃。