Quadrol
乙二胺
🗣️ 情景例句
I think we're having communication problems again.
我想我们又遇到语言沟通的问题了。
We shall never have friends if we expect to find them without fault.
指望朋友无缺点，永远休想交朋友。
Give me a book please, Jane.
请拿本书给我，简。