Diazophenol
[机] 重氮氧化物
🗣️ 情景例句
He started out as a salesman.
他开始时当推销员。
I deeply regret my thoughtlessness.
我深为反省自己的轻率。
In the beginning they used to carve Chinese characters on stones to record important dates in history.
开始时，他们常把汉字刻在石头上，记载历史上重要的日期。