Polyvinylene
聚乙烯撑, 聚次亚乙烯
🗣️ 情景例句
We're working on a solution right now.
我们眼下正在筹划解决方法。
I've spoken English all my life.
我一辈子说英语。
The damage was caused by external forces.
损害是由外力引起的。