Polymine
聚乙烯亚胺; 聚乙烯亚胺
🗣️ 情景例句
You've got yourself to think about, too.
也得为自己着想。
The president must have the approval of Congress to declare war.
总统若要宣战，必须获得国会的承认。
Yes, of course. Come in.
可以，当然可以。请进。