un·usu·al /-ˈjuʒəwəl, ʒəl; ˈjuʒwəl/
  (a.)不平常的,異常的;與眾不同的,獨特的
  unusual
  異常
  Un·u·su·al a. Not usual; uncommon; rare; as, an unusual season; a person of unusual grace or erudition. -- Un*u*su*al*ly, adv. -- Un*u*su*al*ness, n.
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  unusual
       adj 1: not usual or common or ordinary; "a scene of unusual
              beauty"; "a man of unusual ability"; "cruel and
              unusual punishment"; "an unusual meteorite" [ant: usual]
       2: being definitely out of the ordinary and unexpected;
          slightly odd or even a bit weird; "a strange exaltation
          that was indefinable"; "a strange fantastical mind"; "what
          a strange sense of humor she has" [syn: strange] [ant: familiar]
       3: not commonly encountered; "two-career families are no longer
          unusual"