1、The Pleistocene Epoch was an ice age.
更新世是一段冰河時(shí)代。

2、The Pleistocene Epoch or system of deposits.
更新世時(shí)期或更新世沉積物系統(tǒng)

3、Xijiang riverbed has obviously superimposed since Middle Pleistocene Epoch at latest.
最晚自中更新世以來西江河床疊置很明顯。