back-up
 後援,備份


 backup
 後備


 backup
 後備; 備用; 備份; 備製


 back-up
 備份 備用


 backup
 備份 備用


 backup
      n 1: an accumulation caused by clogging or a stoppage; "a traffic
           backup on the main street"; "he discovered a backup in
           the toilet"
      2: someone who takes the place of another (as when things get
         dangerous or difficult); "the star had a stand-in for
         dangerous scenes"; "we need extra employees for summer
         fill-ins" [syn: stand-in, substitute, relief, reliever,
          backup man, fill-in]
      3: a subordinate musical part; provides background for more
         important parts [syn: accompaniment, {musical
         accompaniment, support]
      4: (computer science) a copy of a file or directory on a
         separate storage device; "he made a backup in case the
         original was accidentally damaged or erased" [syn: {computer
         backup]
      5: the act of providing approval and support; "his vigorous
         backing of the conservatives got him in trouble with
         progressives" [syn: backing, championship, patronage]