Ephemera
n. 生命短促的人(或物), 蜉蝣
✅ 同义词
📖 牛津释义
ephemera
n[pl]
things that are used, enjoyed, etc for only a short time and then forgotten 只可短期使用、 享受等的事物.
🗣️ 情景例句
but there's so much energy and talent in the man,
但是他有那么多的精力和才能，
Make yourself necessary to someone.
使你有益于人。
It was from the study of these that so much was learnt about the interior of the earth.
正是从这两种波的研究中，我们可以了解到地球内部的许多情况。