era

era
[ˈɪərə]
noun
  1. a long and distinct period of history with a particular feature or characteristic
    时代
    his death marked the end of an era.
    他的去世标志着一个时代的结束。
    the era of glasnost.
    开放的时代。
    ■a system of chronology dating from a particular noteworthy event
    年代;纪元
    the dawn of the Christian era.
    基督纪元的开端。
    ■(Geology)a major division of time that is a subdivision of an aeon and is itself subdivided into periods
    (地质)代
    the Mesozoic era.
    中生代。
    ■(archaic)a date or event marking the beginning of a new and distinct period of time
    (古)(标志新时期开始的)重要日子,重大事件
语源
  1. mid 17th cent.: from late Latin aera, denoting a number used as a basis of reckoning, an epoch from which time is reckoned, plural of aes, aer- 'money, counter'
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