N-COUNT A mayfly is an insect which lives near water and only lives for a very short time as an adult. 蜉蝣
Like most aquatic insects, mayflies moult as they grow.
像大多数水生昆虫一样，蜉蝣在成长过程中换羽。
The life cycle of mayflies consists of four stages: egg, nymph, subimago, and imago.
蜉蝣的生命周期由四个阶段组成：卵，蛹，亚成虫，成虫。
They also found that the water became well aerated and that populations of important food-chain insects such as mayflies, stoneflies and caddisflies grew.
他们也发现河水的通气性良好，重要的食物链昆虫像是蜉蝣、石蝇和石蛾的族群数都增加了。
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