rat·ty /ˈræti/
  (a.)象老鼠的,鼠臭的,破爛的,易怒的
  ratty
       adj : showing signs of wear and tear; "a ratty old overcoat";
             "shabby furniture"; "an old house with dirty windows
             and tatty curtains" [syn: moth-eaten, shabby, tatty]
       [also: rattiest, rattier]