Azobisformamide
偶二甲酰胺
🗣️ 情景例句
Yes, I remember. You were a great help.
是的， 我记得。你帮了个大忙。
No. I have been away on vacation.
是呀，我休假去了。
East,west，home is best.
金窝，银窝，不如自己的草窝。