Pleis·to·cene /ˈplaɪstəˌsin/
更新世,洪積世
Pleis·to·cene a. Geol. Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man. -- n. The Pleistocene epoch, or deposits.
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Pleistocene
n : from two million to 11 thousand years ago; extensive
glaciation of the northern hemisphere; the time of human
evolution [syn: Pleistocene epoch, Glacial epoch]