BACK SB UP
back sb up: translation
Ⅰ.
UKUSback sb/sth up
—Phrasal Verbwithback(••/bæk/verb[T]
►to provide support for someone or something:»
His warning of the need for good economic housekeeping was backed up by a record current account deficit of £72bn.
»She's backed up by a dedicated team of administrators.
Ⅱ.
UKUSback sth up
—Phrasal Verbwithback(••/bæk/verb[T]
►ITto make an extra copy of a computer file, etc.:»
Don't forget to back up your files at least once a week.
»Research data and account information were backed up daily.