Dinitroamine
二硝[基]胺 ethylenedinitroamine 亚乙基二硝胺
🗣️ 情景例句
How about today?
今天怎么样？
While we were having breakfast,John was talking on the telephone.
当我们正在吃早餐时，约翰正在打电话。
One Monday, there were fewer people in the shop than usual when the woman came in,
有一个星期一，当这位妇女走进这家商场时，里面的人比往常少，