noun 다운로드 🔗공유 하루살이 Any of the many fragile insects of the order Ephemeroptera that develop in fresh water and live very briefly as winged adults. Examples : "Example Sentence: "Near the river, swarms of mayflies appeared and died within a few hours, their brief adult lives already over." " 강가 근처에서 하루살이 떼가 나타나 몇 시간 안에 죽었고, 짧은 성충의 삶은 이미 끝났다. insect animal nature biology ecology AI와 채팅어휘 게임독해 연습