ephemeron是什么意思

ephemeron

美[ɪ'feməˌrɒn]  英[ɪ'femərɒn]
n.  短命的东西
  名词复数：ephemera
  近义词：ephemeral，

英英释义

Noun
  1. anything short-lived, as an insect that lives only for a day in its winged form
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