Pioloform
聚乙烯醇缩醛
🗣️ 情景例句
Thank you.
谢谢你 。
I asked him to paint it for me, but he wouldn't
我请他帮我油漆，但是他不肯。
As the parents had five children, life was a perpetual struggle against poverty.
家里已有5个孩子，全家人常年在贫困中挣扎。