n.纪元；时期；新时代；世 变形： 复数：epochs 双语释义：n.(名词)[C]纪元; 时期,时代 a long period of time in the history of the Earth or of human society英英释义： epoch[ 'i:pɔk, 'epək ]n.a period marked by distinctive character or reckoned from a fixed point or event同义词：era(astronomy) the p