"a traffic backup on the main street"; "he discovered a backup in the toilet"
"he made a backup in case the original was accidentally damaged or erased"
同义词： computer backup
同义词： backing championship patronage
以上来源于: WordNet
N-VAR Backup consists of extra equipment, resources, or people that you can get help or support from if necessary. 后备 (设备、物资或人力)
There is no emergency back-up immediately available.
没有立即就能获得的后备。
N-VAR If you have something such as a second piece of equipment or set of plans as backup, you have arranged for them to be available for use in case the first one does not work. 备用物 (如设备、计划)
Every part of the system has a backup.
这套系统的每个部分都有备件。
N-COUNT The backup of a song is the music that is sung or played to accompany the main tune. 伴奏; 伴唱
Sharon also sang backup for Barry Manilow.
莎伦还为巴里·马尼洛唱了伴唱。
N-COUNT A backup is the same as a . 后援 [美国英语]
They must be dependable and intuitive, making it easy to schedule regular backups and to retrieve files in a pinch.
它们必须是可靠和直观的，以便于安排定期备份和在必要时检索文件。
You have several options for these commands to enable you to do full or incremental backups, either offline or online.
这命令有多个选项，您可以选择进行完整备份或增量备份，脱机备份或联机备份。
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