epoch 'i:pɒk
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
词形变化
复数: epochs
BNC词频排名: 15,275 | 当代语料库词频排名: 12,794