mayfly

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Today we have another name forthis insect: the mayfly.
现在，我们为这种昆虫取了一个新名字——蜉蝣。
His calling was the short story—a form with “the life expectancy of a mayfly”, he conceded.
他的创作重心是短篇——这种文学形式的“生命周期可比蜉蝣”，他也曾这样承认过。
From the shape of the insect, Michael S. Engel, an entomologist at the University of Kansas, identified it as a mayfly, one of the first groups of flying insects.
从虫子的外形看，堪萨斯州大学昆虫学家迈克尔·S·恩格尔认定它为一种最早的飞虫——蜉蝣类。

He invented an innovative fly pattern, called TruForm, which accurately mimics the natural profile of an emerging mayfly.
FORBES: Catskills Fly Fishing Book
Then, one day, I stumbled across a thick magazine that called itself The Drake (named after a large mayfly that both trout and anglers find irresistible).
FORBES: An Interview With Tom Bie, Founder Of The Drake Magazine
There's much handwringing about how the Grubmans and Blodgets of Wall Street beguiled investors during the tech boom into buying stocks that had all the staying power of a mayfly.
FORBES: 2002 Investment Guide

an insect that lives near water and only lives for a very short time as an adult

A mayfly is an insect which lives near water and only lives for a very short time as an adult.

蜉蝣
In part 3,220 mayfly species belonging to 17 families 60 genera from mainland China are listed in the light of update classification system.
本文按新分类系统列出了我国大陆地区已知蜉蝣17科60属220种。
蜉蝣目