noun🔗Share蜉蝣,蚍蜉 Any of the many fragile insects of the order Ephemeroptera that develop in fresh water and live very briefly as winged adults."Along the riverbank, we saw hundreds of mayflies swarming, their brief adult lives already nearing their end. "在河岸边,我们看到成百上千的蜉蝣在群舞,它们短暂的成虫生命已经接近尾声。insectanimalbiologynatureecologyChat with AIVocabulary GamePractice Reading