A delicate aquatic insect of the order Ephemeroptera.

• Nymphs live in fresh water; winged adults live briefly.

脆弱的水生昆虫，属于蜉蝣目。

• 若虫生活在淡水中；成虫寿命极短。

A fishing fly designed to imitate a mayfly.

• Used to match hatches in freshwater fly fishing.

模仿蜉蝣的钓鱼假蝇。

• 在淡水飞蝇钓中用于匹配羽化期。

Something short-lived or quickly fashionable and soon forgotten.

• A fleeting success or trend.

转瞬即逝的事物或昙花一现的潮流。

• 很快被遗忘的短暂成功。