新东方-柯林斯雅思备考词典

backup

英 [ˈbækʌp]

[NOUN]

词汇频率：

拼写变体：

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。

新东方在线雅思考试热词