Diaminoditolyl
二甲基二氨基联苯
🗣️ 情景例句
About fifteen minutes.
大约十五分钟吧。
Who is the auther of this mystery story?
谁是这篇神秘故事的作者？
I don't want to know what it's been; I want to know what it is now.
我不想知道它曾经是什么；我想知道它现在是什么。