/faɪl ||; faɪl/noun[C] 1 a box or a cover that is used for keeping papers together 活页夹 ☞picture at stationery 见stationery插图
2 a collection of information or material on one subject that is stored together in a computer or on a disk, with a particular name (储存在计算机或磁盘上的)文件,文档: to open/close a file 打开╱关闭文件to create/delete/save/copy a file 建立╱删除╱保存╱复制文件
3 a file (on sb/sth) a collection of papers or information about sb/sth kept inside a file (活页夹里的)文件,数据;档案: The police are now keeping a file on all known football hooligans. 警方现在把所有已知的足球赛闹事者的数据存盘。
4 a metal tool with a rough surface used for shaping hard substances or for making surfaces smooth 锉;锉刀: a nail file 指甲锉 ☞picture at tool 见tool插图
on file kept in a file 存档:
We have all the information you need on file. 你要的数据我们都有存盘。 in single file in a line, one behind the other 成单行
the rank and file→
RANK¹