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
It's on the house.
这是免费的。
It's one o'clock sharp.
现在一点整。
Oil rigs have to be repaired frequently and divers,who often have to work in darkness a hundred feet under water,
钻井平台需要经常修理，潜水员常常要在水面100英尺以下摸黑工作，