gad.fly

gadfly的音标和读音：
DJ音标发音： [ˈgædˌflai]
KK音标发音： [ˈgædˌflaɪ]

gadfly的词性：
n.（名词）

1. A persistent, irritating critic; a nuisance.
讨人厌者：总是搅得别人不得安宁的吹毛求疵者；讨厌鬼

2. One that acts as a provocative stimulus; a goad.
刺激：令人振奋的刺激物；激励

3. Any of various flies, especially of the family Tabanidae, that bite or annoy livestock and other animals.
虻：尤指虻科的一种搔扰或咬食牲畜及其它动物的昆虫