单词：back up
支持, 倒退, 给...装上背衬
back up的用法和样例：
例句
用作不及物动词(vi.)
- Because congestion prevents ships heading back to pick up new cargoes, it has helped to push prices up further.由于拥堵使船只难以返回运载新的货物，起到了进一步推高价格的作用。
- Some drivers will switch to the bridge to shorten theircommute, but as the traffic builds up there the motorway starts to look like abetter bet, so some switch back.一些司机为了缩短行程选择走桥，但当桥上变得拥堵时，高速路似乎是更好的选择，因此一些司机又折返回来走桥。
- The fire won't burn because the flue is blocked up.因烟道堵塞火烧不起来。
- Clogged pipes backed up drain water.阻塞的水管堵塞了沟水。
用作及物动词(vt.)
- She has almost nobody to take up for her.她几乎没有人支持。
- The people are at the back of the government.人民是支持政府的。
- The regime had been propped up by foreign aid.该政权是靠外国援助维持著的。
- He turned his back on his own family when they did need help.他的家庭正需帮忙时，他不予援助。
- The car backed up and hit the tree.汽车倒退撞在树上。
- The steps are easy to trace back.易于将这些步骤倒退回去。
- You can back up and restore full-text catalogs.可以备份和还原全文目录。
- This option will back up files on the volume.该选项将备份卷中的文件。
词汇搭配
- put one's back up使生气; 变得倔强...
- get someone's back up惹某人生气,把某人给...
- run up the back背后攻击(背后说人坏...
- get one's back up使one生气; 变得...
- back up(因积聚而)拥堵...
- put someone's back up使某人生气,触怒某人...
- rip up the back背后攻击
- one's back is up生气
【近义词】