noun ダウンロード 🔗共有 カゲロウ 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." " 川の近くで、カゲロウの大群が現れ、数時間のうちに死に絶え、短い成虫としての生涯はすでに終わっていた。 insect animal nature biology ecology AIとチャット語彙ゲーム読解練習
