D. n. b.
[医] 二硝基苯
🧩 词语组成解析
abbr. 名词
🗣️ 情景例句
What was your graduation thesis on?
你毕业论文是什么题目？
He has a telephone set.
他有一部电话。
Spiders are busy for at least half the year in killing insects.
蜘蛛至少有半年在忙于吃昆虫。