Polymine
聚乙烯亚胺; 聚乙烯亚胺
🗣️ 情景例句
My home is a work of art.
我家就是一件艺术品。
She is timid and completely at a loss what to do.
她羞臊得不知所措。
since ground stations and satellites cannot see everywhere.
因为地面工作站和卫星不可能看到地球上的每一个地方。