backtracking

Noun

A file that serves as a duplicate or copy of another file, created as a precautionary measure.

ریشه

From back- +‎ up +‎ file. First recorded in 1955–60.

مثال

• Make sure you save a backup file of your important document.
• The backup file was used to restore the lost data.
• I always keep a backup file of my presentations.

ترکیب‌های رایج

Save a backup file Restore a backup file Keep a backup file