Poly(vinyl acetal)
[化] 聚乙烯醇缩乙醛; 聚乙烯醇缩醛
🗣️ 情景例句
I appreciate it very much.
我非常感激你的帮助。
This is the book that I promised to lend you.
这就是我答应借给你的那本书。
No one knows the location of the hidden treasure.
谁也不知道藏宝地点在哪里。