Polyvinyl acetal
[机] 聚乙烯醇缩醛
🧩 词语组成解析
a. 聚乙烯基的
n. 乙缩醛\\n[化] 乙缩醛; 乙醛缩二乙醇; (类名)醛缩醇; 缩醛(醛缩二醇)
🗣️ 情景例句
Oh, the bet is still on, but you shop for the groceries.
打赌人仍然有效 ，但你去买菜。
I was perfectly aware of this before we married.
结婚前我就完全意识到这个问题。
At that time he had two helpers.
那时他有两个帮手。