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BNC: 15901 COCA: 5476
backup
noun /ˈbækʌp/
singularbackup
pluralbackups
Related words
  1. 1
    [C/U] people or equipment that can be used when extra help is needed 后备人员;支援人员;备用设备

    I've got my mother as a backup in case the babysitter cancels. 万一临时保姆来不了,我还有我母亲可以帮忙。

    They realized that Sykes was armed, and radioed for backup. 他们意识到赛克斯随身带着武器,便用无线电请求支援。

    a backup generator/crew 备用发电机/后备人员

     Synonyms and related words
    Help: help, contribution, assistance...
  2. 2
    [C] a copy of information on your computer that you make in case you lose the information 备份

    Remember to do regular backups. 记住要定期备份。

    a backup copy 备份文件

  3. 3
    [U] music mainly American music that is played or sung to add to the main singer's voice 伴奏;伴唱

    Her sister goes on tour with her and sings backup. 她的妹妹和她一起巡回演出,为她伴唱。

    a backup vocalist 伴唱歌手

     Synonyms and related words

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