做某事很失败
to do something very badly
  He made a complete hash of the last question. 最后一道题他答得完全不对。 
 We heard a brass band making a hash of "Fanfare for the Common Man".
 She made a real hash of her first job in marketing.
 He tried a shot at goal but made a hash of it.
 The show was terrible - he made a hash of even the simplest magic tricks.
 See also: hash noun (FAILURE)