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epochs是什么意思

epochs

时代

柯林斯高阶英汉双解学习词典释义

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时代;纪元

If you refer to a long period of time as an epoch, you mean that important events or great changes took place during it.
例句
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。
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（地质中的）世，纪，期

An epoch is a very long period of time in the earth's development, marked by particular physical or biological characteristics.
例句
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。

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