briefcase
n. 公文包，公事包
复数 briefcases
例句
He was carrying a briefcase.
他提着公文包。
《柯林斯英汉双解大词典》
The briefcase flopped onto the desk.
公文包重重地落在桌上。
He rifled through his briefcase and extracted a file.
他在公文包内搜索一番，取出一份文件。
《牛津词典》
