Pleistocene

['plaistəusi:n]

解释:

(noun.) from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution.

校对:罗杰--From WordNet

解释:

(a.) Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man.

(n.) The Pleistocene epoch, or deposits.

编辑:梅根

解释:

n. (geol.) the name given to the system comprising the older accumulations belonging to the Quaternary or Post-Tertiary division.

卡里校对