公文箱

例句：

1. 1. He carried his documents in a small wooden box.
   他拿着一个小木盒装着文件。
2. 2. The secretary kept all her important papers in a large metal trunk.
   秘书把所有重要文件都放在一个大金属箱子里。
3. 3. The policeman placed the stolen cash and documents into the evidence bag.
   警察把偷来的现金和文件放进了证据袋。