Poly(vinyl formal)
[化] 聚乙烯醇缩甲醛
🗣️ 情景例句
I hope your daughter is all right. Good-bye.
我希望你女儿安然无恙。再见。
At the moment, he is a bit worried about his English.
就在那时候，他有点担心他的英语。
Is this box big? No, it's small.
不，是小的。