D. n. b.
[医] 二硝基苯
🧩 词语组成解析
abbr. 名词
🗣️ 情景例句
How long has he held office?
他已任职多长时间了？
As a matter of fact, we would like to discuss internally regarding item B.
事实上，我们希望可以先内部讨论B项议题。
He speaks little Chinese, so it's difficult to communicate with him.
他只能讲一点汉语，所以和他交流很难。