D. n. b.
[医] 二硝基苯
🧩 词语组成解析
abbr. 名词
🗣️ 情景例句
How many words can you type per minute?
你一分钟能打多少字？
See, listen, and be silent, and you will live in peace.
多看多听少多嘴，你会太平过日子。
The most wonderful piece of machinery on show was Nasmyth's steam hammer.
其中最奇妙的是内史密斯的蒸汽锤。