back up 详细解释
back up
vi. (因积聚而)拥堵, 堵塞
vt. 支持, 援助, 倒退, （资料）备份
支持
He would have lost his position if you hadn't backed him up.
假如你当初没有支持他, 他可能已经失去职位了。
词义辨析
同义参见:
英英释义
名词 back up:
an accumulation caused by clogging or a stoppage
同义词：backup
someone who takes the place of another (as when things get dangerous or difficult)
同义词：stand-in, substitute, relief, reliever, backup, backup man, fill-in
a subordinate musical part; provides background for more important parts
同义词：accompaniment, musical accompaniment, backup, support
(computer science) a copy of a file or directory on a separate storage device
同义词：backup, computer backup
the act of providing approval and support
同义词：backing, backup, championship, patronage
动词 back up:
give moral or psychological support, aid, or courage to
同义词：support
move backwards from a certain position
establish as valid or genuine
同义词：back
make a copy of (a computer file) especially for storage in another place as a security copy
become or cause to become obstructed
同义词：clog, choke off, clog up, congest, choke, foul
补充
back upback up1.支持The policeman wouldn't have believed me if you hadn't backed me up.如果当时你不支持我, 警察是不会相信我的。He backed up his arguments with facts.他以事实支持自己的论点。2.堵塞The accident backed up traffic.事故使交通堵塞。3.往后退You'll have to back up and turn around.你将不得不往后退并转身。4.复制Make sure you back up the disk before you turn the computer off.一定要先复制磁盘, 然后再关电脑。例句
1. If I say I was at your house, will you back me up?如果我说我当时在你们家, 你能为我作证吗？ 2. He backed up to the loading platform.他(把车)倒退到装货平台。 3. If you can't drive up the hill forwards, you'll have to back the car up.假如你不能把轿车正着开上山，就只好倒着开上去。 4. John is expecting us to back him up at the next meeting.约翰期待我们在下次会议上支持他。 5. Will you back up my story to the police?你愿证实我向警察讲述的情况吗? 6. The argument is to be backed up by a lot of facts.这个论据将补充大量事实。 7. to back up a shopwindow with cardboard用卡纸垫衬商店橱窗背部 8. to back up a bookcase with fibreboard用纤维板衬书橱背部 9. Mail is backing up at the post office.邮件积滞在那个邮局里。 10. Traffic backed up for a mile.交通阻塞长达一英里。 11. The flood water backed up the pipes for the dirty water.洪水使水管阻塞而倒流出了污水。 12. The boat is pulling away,back up there!船要松开了，把绳子拉紧! 13. In football the linebacker backs up the linemen.在足球赛中后卫接应前锋。 14. The car backed up slowly.汽车缓缓后退。 15. Could you back up a little to give me some room?你能往后退点给我腾出一些地方吗？ 16. "Wait, let's back up for a second. [=let's go back to what we were discussing earlier]"等等，咱们还是暂且回到刚才的话题。 17. Could you back your car up a little to give me some room?你能把车往后倒点给我腾出点地方吗？ 18. Traffic backed up for miles because of the accident.这个事故使交通堵塞了数英里。 19. The drain backed up [=clogged] and had to be unclogged by a plumber.下水道堵塞了，必须请管道工来疏通才行。 20. The accident backed up traffic for miles. = Traffic was backed up [=(Brit) tailed back] for miles because of the accident.这个事故使交通堵塞了数英里。 21. The drain was backed up.下水道堵塞了。 22. I'll back you up if I think you're right.如果我认为你是对的，我就支持你。 23. She backed her argument up with written evidence. = Written evidence backed her argument up.她用书面证据来支持自己的论点。 24. It's time to back up your words with deeds!是用行动来证明你的话的时候了！ 25. Remember to back up your work before you log off.记得在退出前备份你的文件。