backup

noun

/ˈbækʌp/

[uncountable, countable]

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
(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

词汇	backup
释义	backup noun /ˈbækʌp/ /ˈbækʌp/ [uncountable, countable] 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 (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
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