any of various small biting flies: midges; biting midges; black flies; sand flies
(British usage) mosquito
gnat例句
There is a gnat bite on my hand.
我的手上有个小虫叮的包。
gnat详细解释
gnat n.（名词）Any of various small, biting, two-winged flies, such as a punkie or black fly.蚊，蚋：一种小的咬人的双翼飞蝇，如咬人小飞虫或黑蚊 来源：Middle English 中古英语 from Old English gnôt 源自 古英语 gnôt
