gad·fly
noun/ˈɡædflaɪ/
/ˈɡædflaɪ/
(plural gadflies)
(usually disapproving)- a person who annoys or criticizes other people in order to make them do something
（为使别人做某事而对其进行骚扰或批评的）讨人厌者 - He was a political gadfly, turning up at city council meetings and complaining about the waste of taxpayers’ money.
他是一只政治牛虻，出现在市议会会议上，抱怨浪费纳税人的钱。
Word Originlate 16th cent.: from gad, or obsolete gad ‘goad, spike’, from Old Norse gaddr, of Germanic origin; related to yard, the unit of measurement. - He was a political gadfly, turning up at city council meetings and complaining about the waste of taxpayers’ money.