Pyropolymer
焦化聚合物
🗣️ 情景例句
Yes. Those are excellent gifts. Who else do you need to buy for?
当然，这是都是最佳礼物。你还需要买给谁？
How long is the ticket valid?
这车票有效期多久？
he might as well try to explain a crime or a love affair.
他还不如给人讲一个犯罪案件或一个恋爱故事。