Dinitroamine
二硝[基]胺 ethylenedinitroamine 亚乙基二硝胺
🗣️ 情景例句
Mr. Carlson is busy at the moment. May I help you?
Carlson先生现在正忙着呢。我可以为你效劳吗？
Yes, indeed.
是的，确实如此。
'I don't think the windows need cleaning at this time of the night.
“我看不必在夜里这个时候擦窗子吧。