He was the ultimate predator in earth's history.

它是地球历史中的终极掠食者。

And eight times as fast as one buried in earth.

也比埋至地底的尸体快八倍。

And that these things once roamed the earth in great numbers.

它们曾经大量遍布于世界各地。

All of the energy in earth's food chains comes from the sun.

所有食物链里涉及到的能量都来源自太阳。

This spacecraft will travel near the moon before returning to earth and land in Mongolia.

这个飞行器将在月球附近飞行后返回地球并在内蒙古着陆。

A fossilized palm tree on earth in the Arctic shows that area used to be tropical.

地球北极地区的一棵棕榈树化石表明，该地区曾经是热带地区。

In fact, we would need 4.1 Earths in order to sustain everyone living like an American.

我们需要4.1个地球的资源才能保证我们都过上美国的生活方式。

By the end of the class, Harry, like everyone else, was sweaty, aching, and covered in earth.

到下课时，哈利和其他同学一样满头大汗，腰酸背疼，身上沾满泥土。

The U.S. Geological Survey says only about three quakes that strong hit the earth in an average year.

美国地质调查局表示，地球每年平均发生三次这种强度的地震。

We could see a woolly mammoth roaming the earth in as little as four years, according to researchers.

根据研究人员的说法，我们可以在短短四年之内看到一头长毛象在地球上游荡。

Instead, the seasons on earth change primarily from the relative tilt of the earth in reference to the sun.

相反，地球上的季节变化主要是由于地球相对于太阳的倾斜度。

They are covering the earth in these things.

他们用这些东西覆盖地球。

These aerosols cool the earth in two ways.

- 这些气溶胶以两种方式冷却地球。

And, in fact, she could not bear the earth in her mouth.

而且，事实上，她无法忍受嘴里含着泥土。

Studies have linked such gases to rising temperatures in earth's atmosphere.

研究已将此类气体与地球大气层温度升高联系起来。

In space, the sun, the earth and the moon orbit in predictable patterns.

在太空中，太阳、地球和月球以可预测的方式运行。

Thracians buried their royalty in distinctive, dome-shaped tombs that were covered in earth.

色雷斯人将他们的皇室埋葬在独特的圆顶形墓葬中，这些墓葬被泥土覆盖。

Timber was largely sacrificed in clearing lands for planting, or fell to earth in decay.

木材在清理土地用于种植时被大量牺牲，或者在腐烂中落入泥土。

So just for fun, what would happen if that same asteroid hit the earth in the exact same location today?

只是脑洞开心一下，设想如果在今天，同样的小行星在同样的位置撞击地球会发生什么？

Anyone interested in earth sciences or interested on how volcanoes form, it's a good attraction for them.

RENIVA：任何对地球科学感兴趣或对火山如何形成感兴趣的人，这对他们来说都是一个很好的吸引力。