单词：the Pleistocene
更新世，更新统；更新世沉积物，更新世岩
the Pleistocene的用法和样例：
例句
- The most recent ice age was during the pleistocene.最近的冰河期是在更新世。
- The environment of the Lop Nur Lake was fluctuant since Late Pleistocene.晚更新世以来湖泊沈积环境波动变化加快。