单词：epochs
时代（epoch的复数形式）
时期（epoch的复数形式）
时期（epoch的复数形式）
n. a period marked by distinctive character or reckoned from a fixed point or event
n. (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
n. a unit of geological time that is a subdivision of a period and is itself divided into ages
n. (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
n. a unit of geological time that is a subdivision of a period and is itself divided into ages
单词：epochs 相关文章
Then come Lyell's epochsthe Pleistocene, Miocene, and so onwhich apply only to the most recent (but paleontologically busy) sixty-five million years, and finally we have a mass of finer subdivisions known as stages or ages. Most of these are named, n
发表于:2019-01-29 / 阅读(85) / 评论(0)
万物简史
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