file memory

例句：

1. 1. Please file your papers in the designated folder.
   请将你的文件归档到指定的文件夹里。
2. 2. The teacher asked us to file our homework before class.
   老师让我们在课前把作业提交。
3. 3. I filed the report and sent it to the office.
   我整理了报告并发送给了办公室。