An ephemera or ephemeron was originally a fever lasting only one day , an insect with a very short lifespan, or a plant thought to last a day. Some ancient writers thought there were two plants of this name, one that sprang up and died in a day, the other that carried a poison causing death within a day. The word was then applied to a person or thing of short-lived interest. It appeared in its current plural sense in the 1930s, to describe items like tickets, posters, and greetings cards that were of no enduring value except to collectors. Ephemera and its contemporary **ephemeral** ‘lasting for a very short time’, are from Greek *ephēmeros* ‘lasting only a day’, from *hēmera* ‘day’.
生命短促的东西，昙花一现的事物
🫧 一日即愈的高烧