柯林斯詞典Pleistocene /?pla?st??si?n/ 1. ADJ of, denoting, or formed in the first epoch of the Quaternary period, which lasted for about 1?600?000 years. It was characterized by extensive glaciations of the N hemisphere and the evolutionary development of man 更新世的2. N the Pleistocene epoch or rock series 更新世 返回 pleistocene