Как по Английски будет effimera

plural noun

Things that exist or are used or enjoyed for only a short time.

Примеры использования:

There were papers, letters, old boxes—all sorts of ephemera

noun

Objects that, when they were produced, were not intended to last a long time or were specially produced for one occasion

Примеры использования:

Amongst other pop ephemera, the auction will be selling off rock stars' stage clothes.

noun

A short-lived slender insect with delicate transparent wings and two or three long filaments on the tail. it lives close to water, where the aquatic larvae develop.

Примеры использования:

Rations include a variety of insect larvae, especially mayflies, blackflies, caddis flies, and midg…