柯林斯词典mayfly /ˈmeɪˌflaɪ/ (mayflies) 1. N-COUNT A mayfly is an insect which lives near water and only lives for a very short time as an adult. 蜉蝣 返回 mayfly剑桥词典an insect that lives near water and only lives for a very short time as an adult 蜉蝣 返回 mayfly