files

例句：

1. 1. She kept all her important papers in a file folder on her desk.
   她将所有重要文件都放在一个文件夹里放在她的办公桌上。
2. 2. The company has thousands of files stored in its database.
   该公司有成千上万的文件存储在数据库中。
3. 3. He filed his taxes online and received a refund quickly.
   他在线提交了税务并迅速收到了退款。