Paleolithic man could only make the most basic stone tools.旧石器时代的人类只能制造最简单的石器.the ethnography of paleolithic humans旧石器时代的人种研究The Upper Paleolithic , in contrast , ushered in a suite of sophisticated practices.旧石器时代晚期就不一样...
脊椎动物脑子的这一部分可分为两部分:脑髓和小脑.This part of the vertebrate brain has two divisions, the medulla and the cerebellum.一点耐心可值一大把脑髓.A handful of patience is worth more than a bushel of brains.相对大脑皮质白质又称为大脑髓质.Relative cerebral cortex...