back up

• 短语动词，表示向后移动、支持某人或某事物、提供证据，以及复制数据以防丢失。

A phrasal verb used to indicate moving backwards, providing support or evidence for someone or something, or creating a copy of data for safekeeping.

不可数 · 及物和不及物 · 短语动词，可分

1. Support or confirmformal

   To provide support or evidence for a statement or claim.

   支持

   • The scientist backed up her theory with extensive data.
   • He backed up his argument with several examples.
   • Can you back up your story with any proof?

   同义词bolsterconfirmcorroborateendorsereinforcesubstantiatesupportupholdvalidateverify

   反义词contradictdenydisproveopposerefuteundermineweaken

2. Move backwardsinformal

   To move in a reverse direction, especially a vehicle.

   倒车

   • She backed up the car into the parking space.
   • The truck backed up slowly to the loading dock.
   • He asked me to back up a few feet.

   同义词backback awaypull backretreatreversewithdraw

   反义词advance

3. Make a copyinformalIT

   To create a duplicate copy of data for safekeeping.

   备份

   • Remember to back up your files regularly.
   • I backed up all my photos to an external hard drive.
   • The system automatically backs up data every night.

   同义词archivecopyduplicatesave

4. Cause a blockageinformal

   To cause a queue or obstruction to form.

   堵塞

   • The sink backed up because of a clogged pipe.
   • Traffic backed up for miles after the accident.
   • The drain backed up with leaves and debris.

   同义词blockclogcongestjamobstructplugsnarltie up

   反义词clearunblock

基本动词back