Diazane
二氮烷, 肼
🗣️ 情景例句
Just follow me, Mr. Johnson.
请跟我来 Johnson先生。
You've got an express mail.
你有特快专递。
It was the last day of the year and a large crowd of people had gathered under the Town Hall clock.
那是一年的最后一天，一大群人聚集在市政厅的大钟下面。