In prehistoric times, it stood on dry land.

在史前时期，它位于陆地上。

There are a few different ways that having eyebrows helped us survive in prehistoric times.

在史前时代，眉毛有不同的方式对我们的生存做出贡献。

Then we're making an animated diagram to show the geography of the area in prehistoric times.

然后我们会做一个动画图表，展示这片地域史前的地理状况。

In prehistoric times it stood on dry land however as sea levels rose, erosion reshaped the coast.

在史前时代，它位于干涸的陆地上，然而随着海平面上升，侵蚀作用重塑了海岸。

In prehistoric times, natural selection favored genotypes that could endure harsh conditions by stocking the most fat.

在史前时代，自然选择有利于通过储存最多的脂肪来承受恶劣条件的基因型。

The idea is that our basic human instincts that were first honed way back in prehistoric times include the reflex to fear potentially dangerous animals.

这个想法是，我们在史前时代磨练的基本人类本能就包括害怕存在潜在危险动物的反射。

People have always enjoyed communal gatherings — even in prehistoric times, people would come together, have feasts, and celebrate — and part of the occasion involved playing or listening to music.

人们一直喜欢集体聚会——即使在史前时代，人们也会聚在一起，举行宴会和庆祝活动——其中一部分活动包括演奏或听音乐。

Or who first had the idea of arranging them into weeks, so that they no longer flew past, nameless and in no order, as they did for people in prehistoric times?

谁第一个将日子归纳为星期，日子就不再像对于原始时期的人类那样一天接着一天地过，没有名字，没有顺序？

Now then, right at this spot the sea covers entire forests that sank underwater in prehistoric times; today, turned to stone, transformed into carbon fuel, they offer me inexhaustible coal mines.

现在僵化成石了，变为煤炭了，对我来说，它们是采不尽的矿藏。

People have always enjoyed communal gatherings – even in prehistoric times, people would come together, have feasts and celebrate – and part of the occasion involved playing or listening to music.

人们一直喜欢公共聚会——即使在史前时代，人们也会聚在一起， 举办盛宴和庆祝——其中一部分活动涉及演奏或听音乐。

For example, if I were looking at the fruitarian diet, I would be critical of the fact that it's very unlikely that we were eating primarily fruit in prehistoric times considering our guts shrank as our brain got bigger.

例如，我认为在史前时期采用水果饮食肯定是行不通的，因为在那个时候，人类的消化道比较短，而大脑相对较大。