Our Stone Age ancestors didn't eat that.

我们石器时代的祖先可不吃这些。

It looks like a stone age splint, big microscopic.

它看起来象是石器时代的夹板，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.

波利尼西亚人用石器时代的工具雕刻石像。

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

轮子。石器时代发明的完美部件。

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

这一时期介于石器时代和铁器时代之间。

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

因为事实上，床虱于石器时代便开始骚扰人类了。

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

这种石器时代的面包可能是在扁平的石头上烤成薄饼的。

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

我们石器时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.

你可以说石器时代历时了很久很久。

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，石器时代的人类携带了这些生物跨过海洋。