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TOEFL IELTS BNC: 15275 COCA: 12794
epoch
iːpɒk ˈiˌpɑk epək ˈɛpək ˈɛpˌɑk
Word forms: plural epochs
1 N-COUNT

時代;紀元 If you refer to a long period of time as an epoch, you mean that important events or great changes took place during it. 時代;紀元

  • The birth of Christ was the beginning of a major epoch of world history.

    基督誕生是世界歷史上一個重要紀元的開端。

SYN era, time, age, period
2 N-COUNT [usually supplement NOUN]

（地質中的）世，紀，期 An epoch is a very long period of time in the earth's development, marked by particular physical or biological characteristics. （地質中的）世，紀，期 [technical]

  • Two main glacial epochs affected both areas during the last 100 million years of Precambrian times.

    在前寒武紀的最後1億年中，兩個主要的冰川時期對兩個地區都産生了影響。

Trends of epoch
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