folder

中文： 卷宗、文件夹、目录

1. An organizer that papers are kept in, usually with an index tab, to be stored as a single unit in a filing cabinet. · I keep all my schoolwork in a yellow folder.
2. A virtual container in a computer's file system, in which files and other folders may be stored. The files and subfolders in a folder are usually related. · My essays are in the folder named "Schoolwork".
3. A machine or person that folds things.
4. A folding knife, typically a folding pocketknife.

复数 folders