as·cen·dan·cy /əˈsɛndən(t)si/
  優越,優勢,支配權
  As·cend·an·cy As·cend·ance n. Same as Ascendency.
  ◄ ►
  ascendancy
       n : the state that exists when one person or group has power
           over another; "her apparent dominance of her husband was
           really her attempt to make him pay attention to her"
           [syn: dominance, ascendance, ascendence, ascendency,
            control]