Our Stone Age ancestors didn't eat that.

我们代的祖先可不吃这些。

It looks like a stone age splint, big microscopic.

它看起来象是代的夹板，只不过微小到了肉眼无法看到的程度。

Polynesians carve statues from rock with stone age tools.

波利尼西亚人用代的工具雕刻像。

The wheel. A perfect function invented in the Stone Age.

轮子。代发明的完美部件。

This was the period between the Stone Age and the Iron Age.

这一期介于代和铁代之间。

Because bedbugs have actually been harassing humans since the stone age.

因为事实上，床虱于代便开始骚扰人类了。

This Stone-Age bread was probably baked in thin cakes on flat stones.

这种代的面包可能是在扁平的头上烤成薄饼的。

Our Stone Age ancestors got about 100 grams of fiber every day.

我们代的祖先每天获得大约 100 克纤维。

You could say the Stone Age went on for ages and ages and ages.

你可以说代历了很久很久。

Researchers now think that Stone-Age humans carried the creatures by sea some 8,000 years ago.

研究人员现在认为大概 8000 年前，代的人类携带了这些生物跨过海洋。

All those individuals lived in the Mesolithic Period, also known as the Middle Stone Age Period.

这些人都生活在中代。

This was a set of tools that spread across Africa and beyond during the Stone Age.

这是一套在代传播到非洲及其他地方的工具。

The paleo diet or paleolithic diet is about how did humans eat during the Stone Age.

旧代饮食是关于代人类是如何饮食的。

This is why we say that the Stone Age began before the last Ice Age had ended.

所以我们说代开始早于最后一个冰河代。

They soon found themselves in a sort of modern Stone Age culture, untouched by the outside world.

他们很快发现自己处在一个不为外界所知的现代代文化社会中。

Archaeological finds tell us that the first people in North America had an advanced Stone Age technology.

考古发现告诉我们，北美洲第一批人类具有先进的代的技术。

All materials must be sourced on site, and much of the cutting is still done using Stone-Age tools.

所有物料都是就地取材，砍伐中大量使用的仍是代的工具。

The Zambezi River has potentially nurtured human development from the Stone Age all the way to the modern era.

赞比西河对人类发展的影响可能从代一直延续到了现代。

Please don't be mad at me, Nikki. I'm not advocating that women go back to the Stone Age.

请别对我发火，尼基。我并不是主张女人回到代。

According to them, we're all still trying to cope with modern city life with a Stone Age social brain.

这就是当一个社会群体的合理大小。