mediator [ˈmidiˌetɚ]

例句:

• He will appear in the role of mediator.
  他将出演调停者。
  来自《权威词典》
• He always takes the role of a mediator in any dispute.
  他总是在争论中充当调停人的角色.
  
• Who will act as mediator in the dispute.
  谁在争端中充当调解人?
  
• Perhaps a psychiatrist would make the best mediator.
  来自WSJ
• Date set after meeting with regional mediator.
  来自VOA
• In the worst cases, a colleague or mediator can help.
  来自WSJ