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BNC: 15901 COCA: 5476

backup

noun
/ˈbækʌp/
/ˈbækʌp/
[uncountable, countable]
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  1. extra help or support that you can get if necessary增援;后援
    • The police had backup from the army.警方得到了军方的增援。
    • We can use him as a backup if one of the other players drops out.如果有参赛者退出,我们可以用他作为替补。
    • The hospital has a backup power supply.这家医院有备用电源。
    Topics Crime and punishmentc1
  2. (computing计算机) a copy of a file, etc. that can be used if the original is lost or damaged(文件等的)备份
    • Always make a backup of your work.所有文件都须备份。
    • a backup copy备份文件
    see also back something upTopics Computersc1
BNC: 15901 COCA: 5476
BNC: 15901 COCA: 5476
backup noun
help
BNC: 15901 COCA: 5476

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