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  1. Oxford Dictionary

    backup

    • IPA[ˈbakʌp]

    英式

    • n.
      help or support；a person or thing that can be called on if necessary; a reserve

    • noun: backup, plural noun: backups

    • 釋義

    名詞

    • 1. help or support no police backup could be expected
    • ▪ a person or thing that can be called on if necessary; a reserve I've got a security force as backup a backup generator
    • 2. a copy of a file or other item of data made in case the original is lost or damaged make a backup of any important files a backup copy
    • ▪ the procedure for making backup copies of files or other items of data automatic online backup
    • 3. North American an accumulation of something caused by a blockage, as in traffic or water there are long backups on all routes