backup

英 [ˈbækʌp]

美 [ˈbækʌp]

n.  增援; 后援; (文件等的)备份

复数：backups　

TEM4TEM8计算机

Collins.1 / BNC.15901 / COCA.5476

牛津词典

noun

• 增援；后援
  extra help or support that you can get if necessary
  1. The police had backup from the army.
     警方得到了军方的增援。
  2. 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。
  3. a backup power supply
     备用电源
• （文件等的）备份
  a copy of a file, etc. that can be used if the original is lost or damaged
  1. Always make a backup of your work.
     每次都要对文件进行备份。
  2. a backup copy
     备份文件

柯林斯词典

• N-VAR （物资、人员等的）支持，辅助
  Backupconsists of extra equipment, resources, or people that you can get help or support from if necessary.
  1. There is no emergency back-up immediately available...
     手头无法获得应急支持。
  2. Alternative treatments can provide a useful back-up to conventional treatment.
     替代疗法能为传统的治疗提供有效的辅助。
• N-VAR 备用品；后备计划
  If you have something such as a second piece of equipment or set of plans asbackup, you have arranged for them to be available for use in case the first one does not work.
  1. Every part of the system has a backup...
     系统的每个部分都有备用元件。
  2. Computer users should make regular back-up copies of their work.
     计算机使用者应该定期对自己的工作进行备份。

英英释义

noun

• the act of providing approval and support
  1. his vigorous backing of the conservatives got him in trouble with progressives
  Synonym:backingchampionshippatronage
• (computer science) a copy of a file or directory on a separate storage device
  1. he made a backup in case the original was accidentally damaged or erased
  Synonym:computer backup
• a musical part (vocal or instrumental) that supports or provides background for other musical parts
  Synonym:accompanimentmusical accompanimentsupport
• someone who takes the place of another (as when things get dangerous or difficult)
  1. the star had a stand-in for dangerous scenes
  2. we need extra employees for summer fill-ins
  Synonym:stand-insubstitutereliefrelieverbackup manfill-in
• an accumulation caused by clogging or a stoppage
  1. a traffic backup on the main street
  2. he discovered a backup in the toilet

双语例句

• There are two modes of backup and recovery for both Oracle and DB2 UDB databases: offline and online.
  对于Oracle和DB2UDB数据库，有两种备份和恢复模式：脱机和联机。
• Prior to migrating, we performed a backup of the system ( including a mksysb).
  在迁移之前，我们执行了系统的备份（包括一个mksysb）。
• To back up the filesystems and configuration files, refer to Filesystem/ File backup section command.
  为备份文件系统和配置文件，请参考文件系统/文件备份部分中的命令。
• Multiple instances can simultaneously backup to the same directory file system.
  多个实例可以同时备份到同一个目录文件系统。
• At this page, both online and offline backup maintenance windows can be set.
  在这个页面上，可以设置在线和离线备份维护时间窗。
• Backup and restore capabilities are key to ensuring data recoverability for any database management system.
  对于任何数据库管理系统来说，备份和恢复功能是确保数据可恢复性的关键。
• You also learned how backup and restore is carried out in DB2 and Informix.
  您还了解了如何在DB2和Informix中进行备份和恢复。
• The backup and restore enhancements improve performance and debugging.
  备份和恢复的改进提高了性能和调试效率。
• Every part of the system has a backup
  系统的每个部分都有备用元件。
• You can also backup and restore from the command line.
  您还可以通过命令行进行备份和恢复。