back up

动词 v.

中文释义

英文释义

动词 v.

To move backwards, especially for a vehicle to do so. idiomatic,intransitive

— That beeping sound indicates that the truck is backing up.
To move a vehicle backwards. idiomatic,transitive

— Back up the car a little, you're blocking the driveway.
To undo one's actions. idiomatic,intransitive

— I couldn't see how to finish the project, so I backed up and tried it another way.
To reconsider one's thoughts. idiomatic,intransitive

— This isn't working. Let's back up and think about it.
To copy (data) so that it can be restored if the main copy is lost. idiomatic,transitive

— Back up your documents folder before applying the update.
To provide support or the promise of support to. idiomatic,transitive

— You should be careful. This guy is backed up by the local gang.
For the non-striker to take a few steps down the pitch, in preparation to taking a run, just as the bowler bowls the ball. idiomatic,intransitive
For a fielder to position himself behind the wicket (relative to a team-mate who is throwing the ball at the wicket) so as to stop the ball, and prevent overthrows. idiomatic,intransitive
To halt the flow or movement of something. idiomatic,intransitive

— When I flushed the toilet, the plumbing backed up and burst.
To fill up because of a backlog. idiomatic,informal,intransitive

— WAITRESS: Hurry up with those drinks, Lucy. We're backing up. (Grabs the drinks LUCY has poured.) What are you doing? These are regular. They all ordered large.
To run a printing press in reverse. obsolete
If a property backs up to another property, that means it abuts or shares a border with another property. idiomatic,intransitive

— We bought this house specifically because it backs up to our son's school.

词形变化

backs up present,singular,third-person backing up participle,present backed up participle,past backed up past

词汇关系

衍生词

backupable