英 [ˈbækʌp] 美 [ˈbækʌp]
n. 支援，增援；备用品，后备；备份；伴唱，伴奏；堵塞
adj. 候补的，替代的；支持性的
backup /ˈbækʌp/ CET4 TEM4
有变体名词 Backup consists of extra equipment, resources, or people that you can get help or support from if necessary. 后备 (设备、物资或人力)
There is no emergency back-up immediately available.
没有立即就能获得的后备。
有变体名词 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. 备用物 (如设备、计划)
Every part of the system has a backup.
这套系统的每个部分都有备件。
可数名词 The backup of a song is the music that is sung or played to accompany the main tune. 伴奏; 伴唱
Sharon also sang backup for Barry Manilow.
莎伦还为巴里·马尼洛唱了伴唱。
可数名词 A backup is the same as a . 后援
an accumulation caused by clogging or a stoppage
a traffic backup on the main street ; he discovered a backup in the toilet
someone who takes the place of another (as when things get dangerous or difficult)
同义词： stand-in / substitute / relief / reliever / backup man / fill-in
a subordinate musical part; provides background for more important parts
同义词： accompaniment / musical accompaniment / support
(computer science) a copy of a file or directory on a separate storage device
he made a backup in case the original was accidentally damaged or erased
同义词： computer backup
the act of providing approval and support
同义词： backing / championship / patronage
备份
后备
备用
备制
备份
要避免同样的事件发生，定时备份（Backup）是十分重要的，因为意外是无法预知！所谓定时备份是指每隔一段时间将资料复制到另一个安全地方，例如：光碟、磁带等。
... backcourt：后卫组（包括控球后卫及得分后卫） backup：后备球员 bench(板凳)：（指全体）后备（替换，支援）球员 ...
... advanced：高级设置（进入高级设置二级菜单，见下方） Backup：备份当前系统 Restore：还原上一个系统 ...
Database Backup to Device 备份选择页面 从选择页面中我们可以看到，其提供了备份方式（Backup Mode），备份类型（Backup Type）的选择（关 于备份方式和备份类型我们在这里不进行深入的讨论）。
backstay 后支索；后部支持物
支持的；候补的
You should make a copy of the disk as a backup.
你应该将磁盘复制一个备份。
If that happens, the grasshopper has a backup defense.
如果发生这种情况，蚱蜢就有了后备防御。
In areas where the wind dies down, backup electricity from a utility company or from an energy storage system becomes necessary.
在风能不稳定的一些地区，需要供电事业公司或者能量储存系统来提供备用电能。
They were recorded with excellent backup singers and musicians.
VOA : special.2009.05.11
But it's more limited in its feature set but again will build backup to those features.
由于其自身的特点而很受限制,但是可以对这些特征进行备份。
计算机科学课程节选 : 哈佛公开课
So it's like a backup.
所以，这就像是备用。
SpeakingMax英语口语达人 : 关于大学申请
They played alongside Muddy Waters for 10 years, before launching The Legendary Blues Band with three other members of Muddy's backup group.
VOA : standard.2010.07.20
In the late 1980s, Jon was hired as a backup singer for pop superstar Gloria Estefan.
VOA : standard.2010.04.02
Maybe it'll be broadband, but then there's a backup for 3G connection or 4G, right?
Microsoft had had the foresight to order backup manufacturing capacity from a third party.
Like the Apple product, it can backup data, locate devices or wipe them of sensitive information.
FORBES: Smartphone Security Grows Up With Businesses On The Lookout