Poly(vinyl butyral)
[化] 聚乙烯醇缩丁醛
🗣️ 情景例句
It's nice to see you again.
再次见到你，真是太好了。
You cannot clap with one hand.
孤掌难鸣。
It was very old and precious even then.
却使在当时，它也属历史悠久的珍奇之物。