Azane
氮烷, 氨
🗣️ 情景例句
we don't have to.
我们不必勉强。
To learn obeying is the fundamental art of governing.
学会顺从是管理的基本艺术。
I'm not sure that this conference is as good as last year's.
我确信这次会议不如去年的会议精彩。