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back-up是什么意思 back-up怎么读

['bæk'ʌp] ['bæk'ʌp] ['bæk'ʌp] ['bæk'ʌp]
n.后援;备份;备用
back-up的英文翻译是什么意思,词典释义与在线翻译
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

back-up的相关资料
  • secondaryadj.次要的;从属的;中等教育的n.副手;次要位置
  • back-up的用法和样例
    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。
    字母B开头的缩写
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