我不该把我的公文包和相机包留在那儿无人看管。I should not leave my briefcase and camera bag unguarded.公文包重重地落在桌上。The briefcase flopped onto the desk.设计精巧的小公文包a natty little briefcase...

“公文包”的英语可以翻译为：portfolio，attache case，brief case，briefcase ...