Poly(vinyl formal)
[化] 聚乙烯醇缩甲醛
🗣️ 情景例句
Nonsense! How can you say that and keep a straight face?
胡说八道！你怎么能不动声色说那些话呢？
What does he do?
他是干什么的？
Hi, Han Meimei!
你好，韩梅梅！