file

英 /faɪl/ 　美 /faɪl/

n. 文件；档案；文件夹Stored information on a computer, or an organized collection of papers.
v. 归档；提交To store documents systematically or submit them to an authority.
n. 锉刀A rough metal tool used to smooth or shape surfaces.

I saved the file before switching off my laptop.

我关掉笔记本电脑之前保存了文件。

Public institutions should store confidential files securely to prevent unauthorized access and protect citizens' personal information.

公共机构应安全存储机密文件，以防止未经授权的访问并保护公民的个人信息。

搭配

save a file 保存文件attach a file 附加文件file a complaint 正式提出投诉file documents 将文件归档

file a complaint 指正式投诉，不是把投诉归档。

filing (n.)