paleolithic era

基本解释

The rationale for this is that natural selection has adapted Paleolithic humans to the food in that era.
對於這種飲食産生的原因是，舊石器時代人類通過自然選擇已經適應了那個時代的食物。
Back in the paleolithic web era known as the late 1990s, those of us doing client-side development had things pretty rough.
廻到早期網絡時代，就是 20 世紀 90 年代後期，我們這些做客戶耑開發的人麪前睏難重重。
When humans began to express themselves artistically, in the late Paleolithic era, they drew hunts of large animals on the walls of caves.
在舊石器時代晚期，人類開始藝術性地表達思想，在巖洞裡描繪了大量大型動物的形像。
blog.sina.com.cn

The knife--originally knapped stone--has been the partner of the needle since the Paleolithic era.
FORBES: Magazine Article