Ethanediamine
[医] 乙二胺
🗣️ 情景例句
It's almost lunchtime, and no fish yet.
差不多到午餐时间了， 还没钓到鱼。
I don't know whether it will rain or not.
我不知道是否将下雨。
What do you teach?
你教什么呢？