briefcase

/ˈbriːfkeɪs/VCE📚 7794 1考研雅思
A briefcase is a case used for carrying documents in. 公文包

noun [专属名词]公文包,公事包

The briefcase flopped onto the desk.
公文包重重地落在桌上。

brief(简捷的) + case(手提箱) → 简捷的手提箱 → 公文包
单词造句:
网友用“Briefcase”造句精选
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。