epoch
/'i:pɒk/
六级考研托福雅思GRE基础词汇
BNC词频: #15,275
当代词频: #12,794
中文释义
n. 新纪元, 时代, 时期
英文释义
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
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近义词辨析