N,4-sulfanilylsulfanilamide
[化] 磺胺酰磺胺; 双磺胺
🗣️ 情景例句
I don't envy him his money problems.
我庆幸自己没有他那些金钱的烦恼。
He has been to America.
他曾去过美国。[表示曾经有过的经验]
I'm off on Sunday.
星期天动身。