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请输入您要查询的英文单词：

　

单词 backup
释义

backup ​‌

​noun
UK /ˈbækʌp/
Other entries for this word
backup utility noun
Word Forms
singularbackup
pluralbackups
DEFINITIONS3
  1. 1
    countable/uncountable people or equipment that can be used when extra help is needed

    I’ve got my mother as a backup in case the babysitter cancels.

    They realized that Sykes was armed, and radioed for backup.

    a backup generator/crew

    Synonyms and related words
    Help
    help
    contribution
    assistance
  2. 2
    countable a copy of information on your computer that you make in case you lose the information

    Remember to do regular backups.

    a backup copy

    Synonyms and related words
    Computer files and documents and collections of computer data
    access profile
    archive
    ASCII file
  3. 3
    uncountable ​music​mainly Americanmusic that is played or sung to add to the main singer’s voice

    Her sister goes on tour with her and sings backup.

    a backup vocalist

    Synonyms and related words
    Types of music
    acid house
    acid jazz
    ambient

backup ​‌

​noun
US /ˈbækˌʌp/
Other entries for this word
backup light noun
backup utility noun
Word Forms
singularbackup
pluralbackups
DEFINITIONS4
  1. 1
    countable a copy of information on your computer that you make in case you lose the information

    Remember to do regular backups.

    a backup copy

    Synonyms and related words
    Computer files and documents and collections of computer data
    access profile
    archive
    ASCII file
  2. 2
    countable/uncountable people or equipment that can be used when extra help is needed

    I’ve got my mother as a backup in case the babysitter cancels.

    They realized that Sykes was armed, and radioed for backup.

    a backup generator/crew

    Synonyms and related words
    Help
    help
    contribution
    assistance
  3. 3
    an increase in the amount of something that happens when its normal flow is stopped

    a backup in traffic

    a backup of sewage into a building

    Synonyms and related words
    Too much, extra and more
    too
    exceptional
    surplus
  4. 4
    uncountable ​musicmusic that is played or sung to add to the main singer’s voice

    Her sister goes on tour with her and sings backup.

    a backup vocalist

    Synonyms and related words
    Types of music
    acid house
    acid jazz
    ambient
随便看

　

英语词典包含67175条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

　

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更新时间：2026/6/15 1:49:53