pleistocene

核心释义

1. 1.

   更新世的；第四纪的一个地质世,约258.8万至11700年前(早期定义为170万至11000年前),以人类进化和大型哺乳动物灭绝为特征。

   Of a geologic epoch within the Quaternary period from about 2,588,000 to 11,700 years ago (earlier definition 1.7 million to 11,000 years ago); marked by the evolution of man, and the extinction of the large mammals.