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单词 back up
释义

back up

phrasal verb
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back up | back something up
  1. to move backwards, especially in a vehicle
    • You can back up another two feet or so.
    • I backed the car up to the door.
    • Can you back your car up so that I can get through?
back somebody/something up
  1.  
    to support somebody/something; to say that what somebody says, etc. is true
    • I'll back you up if they don't believe you.
    • The writer doesn't back up his opinions with examples.
  2. to provide support for somebody/something
    • two doctors backed up by a team of nurses
    • The rebels backed up their demands with threats.
    related noun backup
back something up
  1. (computing) to prepare a second copy of a file, program, etc. that can be used if the main one fails or needs extra support
    • It's a good idea to back up your files onto a memory stick.
    related noun backupTopics Computersc1
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更新时间:2025/3/18 8:49:53