Polyethylenamine
聚乙烯胺
🗣️ 情景例句
It was a dollar and sixty cents.
花了一元六角。
We're having a little get-together Friday night.
周五晚上我们有个小派对。
But Jiang Honglin from Class 2 was running very fast.
但是2班的江红林跑得非常快。