glacial period
noun [ C ] geology specialized uk/ˈɡleɪ.ʃəl ˌpɪə.ri.əd/ us/ˈɡleɪ.ʃəl ˌpɪr.i.əd/
冰(川)期,冰河时代
a time in the past when the temperature was very cold and glaciers covered large parts of the earth
Synonym: ice age
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