Polyethyleneimine
聚乙烯亞胺
??? 情景例句
I won't insist, but I think it's in your own best interests to quit smoking.
我不會堅持，但我想戒煙對你自己有好處的。
We should not impose our values and norms upon other people.
我們不應該把自己的價值和規范準則強加于別人。
What was it?
怎么啦。