Diphenylbtnzidine n,n'-
[化] 二苯基联苯胺
🗣️ 情景例句
No. Thank you.
不用了，谢谢。
When the weather is hot, we turn on the air conditioner.
天热的时候就开空调。
I was doing eighty when I overtook you.
我是以第小时80英里的速度赶上你的。