Polyvinylamine
聚乙烯胺; 聚乙烯胺
🗣️ 情景例句
and making it a new community center.
使它成为一个新的社区中心。
He went pale at the news.
听到消息，他脸色发白。
China is great! We like school, and the food is good too.
中国太棒啦！我们喜欢学校，这里的吃的也挺好。