Dach
[医][=diamino-cyclohexane]二氨基环己烷
🗣️ 情景例句
OK, here are the walnuts.
嗯， 核桃在这 。
Are you John's brother?
你是约翰的兄弟吗？
I'm sorry, I don't know. You'd better ask that policeman.
对不起，我不知道。你最好问问那位警察。