rotary file

例句：

1. 1. The company uses a rotary file to store its documents.
   该公司使用旋转式文件来存储其文档。
2. 2.The rotary file system is designed to be easy to use and efficient.
   旋转式文件系统设计为易于使用且高效。
3. 3.The rotary file was invented to speed up the process of document filing.
   旋转式文件的发明是为了加快文档归档过程。