Polyethylene imine
[化] 聚环乙亚胺; 聚氮杂环丙烷
🧩 词语组成解析
n. 聚乙烯\\n[化] 聚乙烯
n. [化]亚胺
🗣️ 情景例句
Yeah, where have you been lately?
是啊，你最近到哪儿去了？
I used to take a walk in the early morning.
我过去常一大早出去散步。
Many of them have to wait six months for their goods.
许多顾客不得不等上半年才得到所需的商品。