epochs的中文意思、音标与词形变化

时代（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