betrayer [bɪ'treɪə]

例句:

• In your language traitor means betrayer : one is perfidious, treacherous, unfaithful, disloyal.
  在贵国的语言中,叛徒指的是叛卖者,一个背叛信仰,两面三刀, 不忠实, 无信无义的人.
  
• "Traitor!" she screamed. "Betrayer of England!"
  “叛徒！”她尖叫道。“英格兰的叛徒！”
  
• She was her friend and now calls her a betrayer.
  她曾经是她的朋友，现在却叫她叛徒。
  
• He is regarded by many on the right as a betrayer, a man who says one thing on the hustings and another when in office.
  来自BBC
• The feeling that Murdoch is a betrayer has been heightened by shifts in his political position.
  来自NEWYORKER