Diazete
二氮杂环丁二烯
🗣️ 情景例句
I don't want to cut class.
我不想逃学。
How long did it last?
持续了多久？
we are now pretty certain the Earth is the only one on which life can survive.
我们目前可以肯定的是，地球是生命能存在的唯一行星。