One degree of latitude on the earth's surface equals almost 70 miles.

地表上的纬一将近七十英里。

Scientists believe there might be such chemicals lying at the bottom of Europa's ocean.

科学家认为木卫二地表下的海床上一定存在这些化学物质。

Now for a scientific look at how this eruption is playing out beneath the surface.

现在我们来看看这次火山喷发是如何在地表下发生的。

Now this is going to represent the warm temperatures near the surface.

这代表地表附近的较暖的温。

Where would you find about 20 percent of the world's surface freshwater?

世界上20%的地表淡水来自哪里?

Most of the animals and plants living on the surface will begin to die.

大多数生活在地表的动植物将开始死亡。

These are surface manifestations of the incredible amount of heat that lies beneath us.

这些就是我们脚下大量热能在地表的呈现形式。

When the IOD is neutral, the surface water in the Indian Ocean is evenly warm.

印洋偶极子是中性时，印洋的地表水是均匀温暖的。

And it uses 90% of its surface and groundwater.

它 90% 的地表水和地下水。

But as the earth heats up, the hottest days of summer are upon us.

但随着地表热量的累积，炎炎夏日即将到来。

Weather conditions affect snow on the ground, as well.

天气状况也能在地表影响雪的状态。

Or, 'twenty miles below the earth's surface', definitely not immediately under it.

再有“地表20英里以下”，指的绝对不是指紧挨着地表的地方。

But you'll never reach the surface — the planet doesn't really have a proper surface.

但你永远也到不地表——这颗行星并没有一个通常意义上的地表。

The goal was to collect rock and dust samples from beneath the surface.

目的是收集地表下的岩石和尘土样本。

We're collecting temperature data below the soil surface.

我们正在收集地表以下的温数据。

Surface waters are 30% more acidic than before the industrial revolution.

30％的地表水酸性比工业革命前强。

It was born and has been nurtured two metres below the surface.

它在地表下两米的地方出生并被哺育长大。

What goes on beneath the surface is pretty darn violent.

地表下发生的事情非常暴力。

This means human activity has greatly affected animals on three-quarters of Earth's surface.

这意味着人类活动对地表三分之二的动物造成大量影响。

The force can break up rock under the Earth's surface, releasing oil and gas.

所产生的压力可可地表下的岩石破裂达到释放石油和天然气的目的。