4周搞定2000+托福核心词
在背后向上支撑→备份
backup
常考释义
n. 后备人员；备用物品；替代物
Every part of the system has a backup.
系统的每个部分都有备用件。
There is no emergency backup immediately available.
没有立即可用的应急备用件。
n. 增援；后援
More officers arrived on the scene to provide backup.
更多警官到达现场提供增援。
Airports are required to have backup from local fire brigades in case of a serious incident.
机场需要有当地消防队作为后援，以防重大事件发生。
Other detectives told him he might not receive police backup on the street.
其他侦探告诉他，他在街上可能不会得到警力增援。
The two bodyguards were frantically calling for backup.
两名保镖正在紧张忙乱地要求增援。
n. 备份文件【计】
It didn't matter that I had accidentally wiped the disk because there was a backup.
我不小心把磁盘上的东西给删了，这不要紧，因为有备份。
n. 支持；援助
Police grew frustrated because they were not getting much backup from the courts.
警方变得灰心起来，因为他们没有得到法庭多少支持。
I've had no backup from my family, none of them even seemed concerned.
我没有得到家人的帮助，没有人表现出些许关心。
He described the technological backup required for the mission.
他说明了这项任务所需的技术支持。
Midwives must have the backup of specialist obstetrician services.
助产士必须有专业产科医生的支持。
n. （道路堵塞引发的）拥堵，排长队<美>
The accident caused a backup on the freeway.
事故造成了高速公路的拥堵。
a traffic backup on the Bay Bridge
海湾大桥上的交通堵塞
adj. 后备的；备用的；替代的
What if you can't borrow your mum's car? Do you have a backup plan?
要是你借不来你妈妈的车呢？你有没有备用计划？
adj. 备份的【计】
Computer users should make regular backup copies of their work.
计算机用户应定期把所做的工作备份。
I was able to reload the files from a backup disk.
我能够从一个备份盘上重新载入那些文件。
a backup storage device
备份存储器
adj. 支持的；后援的；辅助的
We need a backup team in case of emergencies.
我们需要一支后援团队以防发生紧急情况。
Does the company have a 24-hour backup service?
这家公司有24小时支持服务吗？
n. （管道受阻后水流的）泛滥，溢出
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