Dimethylbenzidine
二甲基联苯胺, 联甲苯胺
🗣️ 情景例句
Well, have you ever thought of becoming a journalist?
好， 你是否想过成为一名新闻从业人员？
An occasion lost cannot be redeemed.
时机失了无法挽回。
Could you explain exactly what you do?
您能确切的解释一下你做些什么吗？