Polyethylenamine
聚乙烯胺
🗣️ 情景例句
Get this place picked up immediately. do you read me?
马上把这里收拾干净，听明白没有？
I know the boy whose father is a captain.
我知道那个男孩的父亲是船长。
Yes, Miss Gao.
好的，高老师。