back up
v. 支持，援助；（资料）备份；倒退；裱
同义词
反义词
参考例子
1.He backed up to the loading platform.
他(把车)倒退到装货平台。
2."I never back up for an idiot. " said one driver angrily.
“我从来没有倒退过白痴”一名司机气愤的说道。
3.Back up and consider the people who have been occupying your time.
冷静下来考虑一下那个一直占据著妳的时间的人；
英文解释
n.
1.an accumulation caused by clogging or a stoppage
2.someone who takes the place of another (as when things get dangerous or difficult)
3.a subordinate musical part; provides background for more important parts
4.(computer science) a copy of a file or directory on a separate storage device
5.the act of providing approval and support
v.
1.give moral or psychological support, aid, or courage to
2.move backwards from a certain position
3.establish as valid or genuine
4.make a copy of (a computer file) especially for storage in another place as a security copy
5.become or cause to become obstructed
网络释义
back up
倒退; 支持; 策应; 支持，援助;
back-up ventilation
备用通气;
Back-up light
倒车灯; 倒车?; 倒车灯 交通; 倒车灯——;
back-up ring
密封圈的保
Back-up roll
支撑辊; 支撑轧辊，支撑辊; 支撑轧辊,支承辊; 支撑轧辊;