gadfly [ˈɡædˌflaɪ]

例句:

• It still remains to be seen whether Buchanan will be just a gadfly or a real threat to the president.
  布坎南只是故意搅局还是对总统构成真正的威胁，这还有待观察。
  
• Gemma thought Gadfly was Arthur, but she could not make sure.
  琼玛虽感到牛虻是亚瑟, 却不能确定.
  
• One guy said he'd like to be a gadfly, like Socrates.
  一个男生说,他想做牛虻, 像苏格拉底一样.
  
• Before long, his gadfly streak was rubbing the authorities the wrong way.
  来自CNN
• Ray is a gadfly conscience of a culture given to the myth that artists are free to do whatever they like.
  来自NEWYORKER