gadfly
noun [ C ] uk/ˈɡæd.flaɪ/ us/ˈɡæd.flaɪ/
(ANNOYING PERSON)
讨厌的人;有意让别人不得安宁的人
someone who is always annoying or criticizing other people
They have been accused of being a party of cranks and political gadflies. 他们被斥为一群怪人和政治讨厌鬼。
(INSECT)
虻
a fly that bites horses and cows