back up

1. PHRASAL VERB 支持，证实（某种说法）
   If someone or something backs up a statement, they supply evidence to suggest that it is true.
   1. Radio signals received from the galaxy's centre back up the black hole theory...
      从该星系中心收到的无线电信号证实了黑洞理论。
   2. Her views are backed up by a 1989 Home Office report on crime.
      1989年内政部的一份犯罪报告印证了她的观点。
2. PHRASAL VERB 备份（文件）
   If you back up a computer file, you make a copy of it which you can use if the original file is damaged or lost.
   1. Make a point of backing up your files at regular intervals...
      一定要定期备份文件。
   2. I get so annoyed when I lose work because I've forgotten to back it up.
      当我因为忘了备份把完成的工作弄丢时，真是懊恼极了。
3. PHRASAL VERB 将…付诸实施
   If an idea or intention is backed up by action, action is taken to support or confirm it.
   1. The Secretary General says the declaration must now be backed up by concrete and effective actions...
      秘书长说现在必须将宣言付诸具体有效的行动。
   2. It is time the Government backed up its advert campaigns with tougher measures.
      是政府采取更严厉的措施来兑现其宣传承诺的时候了。
4. PHRASAL VERB 支持（某人）
   If you back someone up, you show your support for them.
   1. His employers, Norfolk social services, backed him up.
      他的雇主——诺福克社会服务中心给予了他支持。
5. PHRASAL VERB 证实（某人）的说法
   If you back someone up, you help them by confirming that what they are saying is true.
   1. The girl denied being there, and the man backed her up.
      女孩否认在场，那名男子证实了她的话。
6. PHRASAL VERB 倒车
   If you back up, the car or other vehicle that you are driving moves back a short distance.
   1. Back up, Hans...
      倒车，汉斯。
   2. He backed up a few feet and rolled the window down...
      他往后倒了几英尺，然后摇下车窗。
   3. A police van drove through the protesters and backed up to the front door of the house.
      一辆警车穿过抗议的人群，并倒至房子的前门。
7. PHRASAL VERB （车辆）堵塞，排成长龙
   If vehicles back up, they form a line of traffic which has to wait before it can move on.
   1. Traffic into London on the M11 was backed up for several miles.
      进入伦敦的车辆在11号高速公路上堵了好几英里。
8. PHRASAL VERB 倒行；退着走；后退
   If you back up, you move backwards a short distance.
   1. I backed up carefully until I felt the wall against my back...
      我小心翼翼地后退，直到感觉后背碰到了墙壁。
   2. She backed up a few steps.
      她后退了几步。
9. See also: backup

1. Some food labelling practices really get my back up.
   有些食物标签的贴法实在让我生气。
2. Radio signals received from the galaxy's centre back up the black hole theory
   从该星系中心收到的无线电信号证实了黑洞理论。
3. Make a point of backing up your files at regular intervals
   一定要定期备份文件。
4. I get so annoyed when I lose work because I've forgotten to back it up.
   当我因为忘了备份把完成的工作弄丢时，真是懊恼极了。
5. The Secretary General says the declaration must now be backed up by concrete and effective actions
   秘书长说现在必须将宣言付诸具体有效的行动。
6. It is time the Government backed up its advert campaigns with tougher measures.
   是政府采取更严厉的措施来兑现其宣传承诺的时候了。
7. His employers, Norfolk social services, backed him up.
   他的雇主——诺福克社会服务中心给予了他支持。
8. The girl denied being there, and the man backed her up.
   女孩否认在场，那名男子证实了她的话。
9. Back up, Hans
   倒车，汉斯。
10. He backed up a few feet and rolled the window down
    他往后倒了几英尺，然后摇下车窗。
11. A police van drove through the protesters and backed up to the front door of the house.
    一辆警车穿过抗议的人群，并倒至房子的前门。
12. Traffic into London on the M11 was backed up for several miles.
    进入伦敦的车辆在11号高速公路上堵了好几英里。
13. I backed up carefully until I felt the wall against my back
    我小心翼翼地后退，直到感觉后背碰到了墙壁。
14. She backed up a few steps.
    她后退了几步。
15. He booted the ball 40 yards back up field
    他一脚踢出40码远，把球踢回前场。
16. I'm not coming back up here. Never, for love nor money.
    我不打算再回这里了，绝对不回了。
17. The West must back up its verbal support with substantial economic aid.
    西方国家必须以切实的经济援助来兑现他们的口头支持。
18. Clogged pipes caused drain water to back up into the room.
    水管堵塞，排出去的水倒灌入室。
19. Don't back up the moment you run up against a little difficulty.
    不要遇到一点困难就打退堂鼓。
20. I wonder what has caused so many vehicles to back up here.
    我不知道为什么会有这么多车辆阻塞在这里。
21. Shut the database down and back up all data and all log and control files.
    关闭数据库，备份所有数据以及所有日志和控制文件。
22. To help you back up your site database, I recommend installing and enabling the Backup and Migrate module.
    为了帮助您备份站点数据库，我建议安装和启用Backup和Migrate模块。
23. Make sure you back up your system.
    确保对系统进行了备份。
24. No matter how many times you fall down, you keep getting back up.
    无论你跌倒了多少次，你都重新站起来。
25. I was back up and running in fairly easy order.
    我能够在相当容易的程序下备份和运行。
26. Someone down there coming back up.
    那边有人要回来了。
27. You can back up files and settings, or restore them from a previous backup.
    您可以备份文件和设置，或者从以前的备份中将文件和设置还原。
28. I'm going back up to see my friend.
    我要回去找我的朋友了。
29. I'll now back up.
    我现在会回来。
30. You can back up and restore full-text catalogs.
    可以备份和还原全文目录。

verb

1. establish as valid or genuine
   1. Can you back up your claims?

   Synonym:    back

2. become or cause to become obstructed
   1. The leaves clog our drains in the Fall
   2. The water pipe is backed up

   Synonym:    clogchoke offclog upcongestchokefoul

3. make a copy of (a computer file) especially for storage in another place as a security copy
   1. You'd better back up these files!

4. move backwards from a certain position
   1. The bully had to back down

   Synonym:    back offback down

5. give moral or psychological support, aid, or courage to
   1. She supported him during the illness
   2. Her children always backed her up

   Synonym:    support