| 单词 | backup |
| 释义 | backupbackupsbackupbackup /ˈbækʌp/ noun1[uncountable and countable] extra help or support that can be used if it is needed: Four more police cars provided backup.carprovide又来了四辆警车提供支援。2[countable] a copy of a computer document or program that you can use if the original one is lost or damagedbackup ofHave you made a backup of the file?make你给这个档案做备份了吗？ |
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