epoch

英 [ˈiːpɒk]

美 [ˈepək]

n.  时代; 纪元; 时期; 世(地质年代，纪下分世)

复数：epochs　

CET6考研TOEFLIELTSGRETEM8

Collins.1 / BNC.15275 / COCA.12794

牛津词典

noun

• 时代；纪元；时期
  a period of time in history, especially one during which important events or changes happen
  1. The death of the emperor marked the end of an epoch in the country's history.
     皇帝驾崩标志着该国历史上一个时代的结束。
• 世（地质年代，纪下分世）
  a length of time which is a division of a period
  1. geological epochs
     地质世

柯林斯词典

• N-COUNT 时代;纪元
  If you refer to a long period of time as anepoch, you mean that important events or great changes took place during it.
  1. The birth of Christ was the beginning of a major epoch of world history.
     基督诞生是世界历史上一个重要纪元的开端。
• N-COUNT （地质中的）世，纪，期
  Anepochis a very long period of time in the earth's development, marked by particular physical or biological characteristics.
  1. Two main glacial epochs affected both areas during the last 100 million years of Precambrian times.
     在前寒武纪的最后1亿年中，两个主要的冰川时期对两个地区都产生了影响。

英英释义

noun

• a unit of geological time that is a subdivision of a period and is itself divided into ages
• a period marked by distinctive character or reckoned from a fixed point or event
  Synonym:era
• (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
  Synonym:date of reference

双语例句