briefcase
n. 公文包
近义词：case，portfolio，musiccase，folder，bag，
双解释义
n.(名词)
- [C]公文包 a flat usually soft leather case for papers
英英释义
Noun
- a case with a handle; for carrying papers or files or books
例句
用作名词(n.)
- He put all the files into his briefcase.他将所有文件都装进公文包。
- No one told me about any briefcase.没有人和我提过什么公文包。