Diazocompound
重氮化合物
🗣️ 情景例句
And in a short campaign
而且这一场短暂的竞选
A good book is a light to the soul.
好书一本，照亮心灵。
Every day he does the same thing. Why doesn't he use the lift for the last three floors?
每天他都这样度过。为什么上最后3层楼他不用电梯呢？