Dinitrohydroxyazo
二硝基羟偶氮
🗣️ 情景例句
What events are happening on campus?
校园里有什么事件发生？
How long have you studied English?
你学英语多久了？
He calls at every house in the street once a month and always asks for a meal and a glass of beer.
他每月对这条街上的每户人家光顾一次，总是请求给他一顿饭和一杯啤酒。