| 释义 |
backupback·up /ˈbækʌp / noun - [uncountable] extra help or support增援；后援◆Her success is partly due to the backup she gets from her team.她的成功有一部分要归功于队友的支持。
- [countable] an extra thing or a copy of something that you can use if the original one is lost or damaged备用品；备份◆Always make a backup of your computer files.每次都要对计算机文件进行备份。◆We have a generator to use as a backup when the lights go out.如果停电，我们有个发电机备用。
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