back up是什么意思_back up的用法_翻译_读音

英英释义

Verb:

give moral or psychological support, aid, or courage to;
"She supported him during the illness"
"Her children always backed her up"
move backwards from a certain position;
"The bully had to back down"
establish as valid or genuine;
"Can you back up your claims?"
make a copy of (a computer file) especially for storage in another place as a security copy;
"You'd better back up these files!"
become or cause to become obstructed;
"The leaves clog our drains in the Fall"
"The water pipe is backed up"

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.)

词汇搭配

近反义词

【近义词】

临近单词