| 单词 | ephemera |
| 释义 | Word Frequency ephemera(ɪˈfɛmərə) nounWord forms: plural -eras or -erae (-əˌriː) 1. a mayfly, esp one of the genus Ephemera 2. something transitory or short-lived 3. (functioning as plural) a class of collectable items not originally intended to last for more than a short time, such as tickets, posters, postcards, or labels 4. a plural of ephemeron Word origin C16; see ephemeral |
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