back up
 支援;倒車;證實;淤塞


 back up
 備份檔案; 後備; 備份


 back up
      v 1: give moral or psychological support, aid, or courage to;
           "She supported him during the illness"; "Her children
           always backed her up" [syn: support]
      2: move backwards from a certain position; "The bully had to
         back down" [syn: back off, back down]
      3: establish as valid or genuine; "Can you back up your
         claims?" [syn: back]
      4: make a copy of (a computer file) especially for storage in
         another place as a security cop; "You'd better back up
         these files!"
      5: become or cause to become obstructed; "The leaves clog our
         drains in the Fall"; "The water pipe is backed up" [syn: clog,
          choke off, clog up, congest, choke, foul] [ant:
          unclog]