名詞 pleistocene:

1. from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution
   同義詞：Pleistocene epoch, Glacial epoch

Pleis.to.cene

adj.（形容詞）
Of, belonging to, or designating the geologic time, rock series, and sedimentary deposits of the earlier of the two epochs of the Quaternary Period, characterized by the alternate appearance and recession of northern glaciation and the appearance of the progenitors of human beings.See table at geologic time
更新世的：屬于或標志第四紀的兩個時期中較早時代的地質時期、巖石系列和沉積礦床的，這一時期以互生外貌、北方冰蝕退縮和人類祖先的出現(xiàn)為特征參見 geologic time
n.（名詞）
The Pleistocene Epoch or system of deposits.
更新世時期或更新世沉積物系統(tǒng)

來源：
Greek pleistos [most] * see pel…-
希臘語 pleistos [大多數(shù)] *參見 pel…-
-cene
-cene