Polyvinylamine
聚乙烯胺; 聚乙烯胺
🗣️ 情景例句
I understand Richard's feelings about it, Ellen.
我了解Richard对此的感受， Ellen。
You mind your business, and I'll mind mine.
井水不犯河水。
She arrived in England a week after the Thermopylae.
它抵达英国时比“塞姆皮雷”号晚了1个星期。