Diazodinitrophenol
重氮二硝基苯酚
🗣️ 情景例句
Did you ever think of photographing an aerobics class?
你想过拍摄有氧运动课吗？
This is January.
现在是一月份。
No, it isn't! That's a cat!
不，不在！那是一只猫。