Dinitroamine
二硝[基]胺 ethylenedinitroamine 亚乙基二硝胺
🗣️ 情景例句
Speaking of promoting the book,
说起促销书的事
I'm fishing at the lake.
我在湖边钓鱼。
I've never met him but I've talked to him on the net.
我没见过他，但我和他在网上聊过天。