back up

US /bæk ˈʌp/
UK /bæk ˈʌp/
"back up" picture
1.

备份, 复制

to make a copy of information on your computer

:
•
You should always back up your important files.
你应该总是备份你的重要文件。
•
Did you remember to back up the system before the update?
你记得在更新前备份系统了吗？
:
archiveduplicatecopysave
2.

支持, 证实

to support someone or something

:
•
I'll back you up if you need help.
如果你需要帮助，我会支持你。
•
The evidence doesn't back up his claims.
证据不支持他的说法。
:
supportcorroboratesubstantiateverifyconfirm
3.

倒车, 后退

to move backward, especially a vehicle

:
•
Can you back up a little so I can park?
你能倒车一点，好让我停车吗？
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The truck had to back up to turn around in the narrow street.
卡车不得不在狭窄的街道上倒车才能掉头。
:
reverseretreatrecede
:
backbackingfed up to the back teethon the up and upput/get someone's back uptake backcentre back