新东方-柯林斯雅思备考词典

backup

英  [ˈbækʌp]
    

[NOUN]

又拼作 back-up  
    NOUN. 名词
  • backups

    1[C, U 有变体名词] 后备(设备、物资或人力)

    Backup consists of extra equipment, resources or people that you can get help or support from if necessary.

    双语例句

    例:

    There is no emergency back-up immediately available.

    没有能立即获得的后备。

    2[C, U 有变体名词] 备用物(如设备、计划)

    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.

    双语例句

    例:

    Every part of the system has a backup.

    这套系统的每个部分都有备件。