Polycondensate
缩聚物
🗣️ 情景例句
Oh, I'm so excited!
噢， 我真是太兴奋了！
You were lucky to find it.
你的运气真好。
If one side fails to observe the contract,the other side is entitled to cancel it.
如果一方不履行合同协议，另一方则有权终止合同。