Dinitroamine
二硝[基]胺 ethylenedinitroamine 亚乙基二硝胺
🗣️ 情景例句
But it is not polite to ask older people their age.
但问老人的年龄是不礼貌的。
I took out my toys.
我拿出了我的玩具。
Yes, why?
是的。怎么样呢？