| 单词 | back sth up |
| 释义 | back sth up back (sth) up — phrasal verb with back /bæk/ verb ► F0 to drive backwardsThesaurus+: ↑Driving and operating road vehicles back sth up — phrasal verb with back /bæk/ verb C2 to prove something is true: » His claims are backed up by recent research.Thesaurus+: ↑Proving and disprovingB2 to make an extra copy of computer information: » Make sure you back up your files.→ SEE ALSO BACKUP(Cf. ↑backup)Thesaurus+: ↑Operating computers |
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