Polymine
聚乙烯亚胺; 聚乙烯亚胺
🗣️ 情景例句
How about the pricing?
价格怎么样？
Their grandchildren are grown up now.
他们的孙子现在长大了。
What about your sister Kate? You didn't come together, did you?
你的妹妹凯特呢？你们不是一起进校的，对不对？