con·tes·tant /kənˈtɛstənt ||ˈkɑnˌ/
  競爭者
  Con·test·ant n.  One who contests; an opponent; a litigant; a disputant; one who claims that which has been awarded to another.
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  contestant
       n 1: a person who participates in competitions
       2: a person who dissents from some established policy [syn: dissenter,
           dissident, protester, objector]