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。
a backup power supply
备用电源
Always make a backup of your work.
所有文件都须备份。
a backup copy
备份文件
1.后补物,替代物,备用物;支持;阻塞;【计】备份
1.后补的,副(手)的,替代的,备用的;支持性的;伴奏的
1.a copy of information on your computer that you make in case you lose the information
2.people or equipment that can be used when extra help is needed
3.an increase in the amount of something that happens when its normal flow is stopped
4.music that is played or sung to add to the main singer’s voice
1.a copy of information on your computer that you make in case you lose the information
2.people or equipment that can be used when extra help is needed
3.an increase in the amount of something that happens when its normal flow is stopped
4.music that is played or sung to add to the main singer’s voice
1.More to the point, the Sudanese government evidently has no backup plan to replace the vital services the NGOs provided.
更重要的是，苏丹政府显然没有能够替代这些非政府组织提供的重要服务的后备计划。
2.After formatting, each file or tape contains a media header for the media set and is ready to receive backup content.
设置格式后，每个文件或磁带都包含媒体集的媒体标头，可以开始接收备份内容。
3.As a best practice, keep three copies of the backup media, and keep at least one copy offsite in a properly controlled environment.
最佳做法是保存三份备份媒体副本，并至少将其中一份副本保存在有适当防控措施的远离现场的环境中。
4.How much time will pass between backup operations?
在备份操作之间应该间隔多长时间？
5.It will simplify your manual backup operations by means of an easy-to-use interface and a scheduling module.
它将简化你的备份手工作业方式，一个简单易用的界面和一个调度模块。
6.After his death, my mother had to raise us alone, and she was acutely aware that she was truly on her own, with no backup plan.
父亲去世以后，妈妈不得不独自抚养我们。她深切地意识到她得真正地靠自己，没有别的办法。
7.A Tepco spokesman said the company takes all required safety measures and has built-in backup systems to handle contingencies.
东京电力一位发言人说，公司采取所有要求采取的安全措施，并拥有内置备用系统来应对紧急情况。
8.This approach is often used to enable the use of backup servers in performing fail-over support for improving service availability.
通常使用这种方法启用执行故障排除支持的备份服务器（backupserver）的使用来改善服务的可用性。
9.You need to be careful if you try to install a copy of the JDK or SDK from a backup into a directory different from the default location.
在您试图将JDK或SDK的副本从备份安装到缺省位置上的另一个目录中时，需要格外小心。
10.You might have to scroll to the bottom of the log file to find the information that relates to the most recent backup .
可能必须滚动到日志文件的底部，才能找到与最新的备份有关的信息。