Polyvinyl
a. 聚乙烯基的
🗣️ 情景例句
Didn't we go to school together?
我们以前在一起上过学吗？
Don't throw out your dirty water before you get in fresh.
清水未打来，赃水莫倒掉。
Each time you fail, start all over again.
每次你失败，再从头开始。