flat edge file

例句：

1. 1. This flat edge file is very useful for organizing documents.
   这个平边文件对于整理文档非常有帮助。
2. 2.The flat edge file was designed to be easy to use and store information.
   这个平边文件被设计为易于使用和存储信息。
3. 3.The flat edge file is a popular choice for storing important documents.
   这个平边文件是存储重要文件的热门选择。