ice age
noun [ C ] uk/ˈaɪs ˌeɪdʒ/ us/ˈaɪs ˌeɪdʒ/
冰河时代，冰川期，冰期
a time in the past when the temperature was very cold and glaciers (= large masses of ice) covered large parts of the earth
Synonym: glacial period
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