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词汇 back up
释义

back up

phrasal verb
back up | back something up
  1. to move backwards, especially in a vehicle后退;倒(车)
    • You can back up another two feet or so.你可以再退两英尺左右。
    • I backed the car up to the door.我把车倒到门前。
    • Can you back your car up so that I can get through?你能不能把车倒一下让我过去?
back somebody/something up
  1.  
    to support somebody/something; to say that what somebody says, etc. is true支持;证实(某人所言)
    • I'll back you up if they don't believe you.如果他们不相信你,我会为你作证。
    • The writer doesn't back up his opinions with examples.作者没用实例印证他的看法。
  2. to provide support for somebody/something支持;支援
    • two doctors backed up by a team of nurses由一组护士辅助的两名医生
    • The rebels backed up their demands with threats.反叛者以恐吓手段要挟。
    related noun backup
back something up
  1. (computing计算机) to prepare a second copy of a file, program, etc. that can be used if the main one fails or needs extra support备份:准备文件,程序等的第二个副本,如果主副本出现故障或需要额外的支持,则可以使用该副本
    • It's a good idea to back up your files onto a memory stick.把你的文件备份到记忆棒上是个好主意。
    related noun backupTopics Computersc1
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