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

• Be sure to backup the project directory to ensure that you have this output saved.
  确保备份项目目录，以保证您保存了此输出。
• This new feature provides a report of ON-Bar backup and restore performance.
  这项新特性提供了对ON-Bar备份和恢复性能的报告。
• If you set this preference, the Web Service wizard will not backup and overwrite the old skeleton bean.
  如果您设置了这个参数，这个WebServices向导将不会备份和重写旧的框架程序。
• 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。
• You can use the ontape utility to backup and restore data from the file system without interactive prompts.
  可以使用ontape实用程序从文件系统中备份和恢复数据，而无需借助使用TAPEDEV和LTAPEDEV配置参数的交互式提示符。
• Clouds and rain in Florida forced NASA to land the shuttle at a backup landing site.
  弗罗里达连日的阴雨连绵不得不让国家航空和宇宙航行局启用这个备用降落场。
• The offline policy controls backup and restore commands, and the encryption and decryption of database backup images.
  离线策略控制备份和恢复命令，以及数据库备份映像的加密和解密。
• You can also freeze file systems to support snapshots for file system backup.
  也可以冻结文件系统来支持文件系统备份的快照。
• Unlike offline backup, online backup only requires that data files and control files be backed up.
  与脱机备份不一样，联机备份只要求备份数据文件和控制文件。
• You can also use the brdb6brt tool to create a backup and generate the restore script in one step.
  还可以使用brdb6brt工具在一步中创建备份和生成恢复脚本。