Poly(vinyl formal)
[化] 聚乙烯醇縮甲醛
??? 情景例句
Ellen, why don't you go out to the backyard
Ellen，何不去院子
Yes,I will.
行。
As his flat is in a large town, he has no garden of his own.
他住在大城市里的一所公寓里，沒有自己的花園。