back-up

英 ['bæk'ʌp] 美 ['bæk'ʌp]

• n. 后援；备份；备用

英英释义

名词 backup:

1. an accumulation caused by clogging or a stoppage

2. someone who takes the place of another (as when things get dangerous or difficult)

3. a musical part (vocal or instrumental) that supports or provides background for other musical parts

4. (computer science) a copy of a file or directory on a separate storage device

5. the act of providing approval and support

动词 back up:

1. give moral or psychological support, aid, or courage to

2. move backwards from a certain position

3. establish as valid or genuine

4. make a copy of (a computer file) especially for storage in another place as a security copy

5. become or cause to become obstructed

例句

用作名词 (n.)

1. Liu Bei was given 1,000 troops as the back up force.
   刘备带一千人马作后援。
2. You can back up and restore full-text catalogs.
   可以备份和还原全文目录。
3. This option will back up files on the volume.
   该选项将备份卷中的文件。
4. You should carry a spare wheel in the back of your car.
   你应在车后带一个备用的轮胎。
5. He asked Congress for stand-by authority to call up the reserves.
   他要求国会授予他征召后备役的备用权力。

词汇搭配

• get someone's back up 惹某人生气,把某人给...
• put one's back up 使生气; 变得倔强...
• get one's back up 使one生气; 变得...
• put someone's back up 使某人生气,触怒某人...
• back up (因积聚而)拥堵...
• one's back is up 生气
• run up the back 背后攻击(背后说人坏...
• rip up the back 背后攻击
• back up protection 后备保护
• back-up plate 垫片
• back-up system 后备系统
• back up power [化] 备用电源...
• file back-up 备用文件
• analog back-up 模拟后备
• back up system 后援系统
• back-up ring 支承环
• back up item 平行研制项目...
• back-up roller 支撑滚筒
• back up block 支撑块
• back-up protection 后备保护装置...

近反义词

【近义词】

• secondary 次要的