The rainwater slowly dripped down to the earth's crust.

雨水缓缓滴落到地壳上。

And here is what happen if earth's crust suddenly opened up?

我们来看看，如果地壳突然打开会发生什么事情。

The magnitude of the earthquake reflects how much of the earth's crust ruptured.

地震的震级反映的是地壳的破裂程度。

But we chemists know silicon first and foremost as the most abundant element in the earth's crust.

但是我们化学家最先了解硅，并且知道硅是地壳中第二丰富的元素。

Normally hidden by water, there is a huge ravine in the earth's crust, where two tectonic plates meet.

在地壳上有一个巨大的峡谷，它隐藏在水中在这里，两个构造板块相遇了。

Remember tectonic plates underneath the earth's crust.

记住地壳下面的构造板块。

Well, when slabs of rock that make up earth's crust rub together, all the minerals they're made of wash into the sea.

嗯，当构成地壳的岩石板摩擦在一起时，构成它们的所有矿物质都被冲入大海。

Most of them are actually inside the earth's crust.

它们中的大多数实际上都在地壳内部。

Are buried deep down in the earth's crust.

埋藏在地壳深处。

It had to do with the outer shell, or crust, of the earth. The earth's crust is divided into different pieces, or plates.

它与地球的外壳（地壳）有关。地壳被分成不同的板块。

Iron is really, really cheap, and it's really really abundant in the earth's crust.

铁真的非常非常便宜，而且在地壳中真的非常丰富。

It's also the fifth most abundant element on the earth's crust.

它也是地壳上第五丰富的元素。

But, Fairchild used the abundant silicon, which makes up about a quarter of the earth's crust!

但是，Fairchild 使用了丰富的硅，大约占地壳的四分之一！

Geologists have long used seismometers to track and map these tiny shifts in the earth's crust.

地质学家早已使用地震仪来追踪、绘制地壳中的这些微小变化。

You could never have had the stupendous beauty of the Himalayas without the unimaginable horror of a convulsion of the earth's crust.

如果没有地壳剧烈震荡的难以想象的恐怖， 你永远不可能看到喜马拉雅山的壮丽景色。

The seismic waves traveled through the earth's crust at the extremely high speed of 900 kilometers per hour, generating a fault that opened up across the entire bay.

地震波以每小时900公里的极高速度穿过地壳，形成了贯穿整个海湾的断层。

And it may seem like life buried deep within the earth's crust is so far away from our daily experiences that it's kind of irrelevant.

埋在地壳深处的生命似乎与我们的日常经历相距甚远，以至于它有点无关紧要。

So you may not have ever thought about these microbes that are deep inside earth's crust, but you probably thought about the microbes living in our guts.

所以你可能没有想过地壳深处的这些微生物，但你可能想过生活在我们肠道中的微生物。

As Lyell has well remarked, the extent and thickness of our sedimentary formations are the result and the measure of the denudation which the earth's crust has elsewhere undergone.

正如莱尔所说的那样， 我们沉积岩层的范围和厚度是地壳在其他地方经历的剥蚀的结果和衡量标准。

When some of the tectonic plates shift the magma rises even higher some of the magma pushes through the cracks in the earth's crust at vents and fissures until it reaches the surface where it's then called lava.

当一些构造板块移动时，岩浆会上升得更高一些岩浆会从地壳的裂缝中通过火山口和裂缝推到地表，在那里它被称为熔岩。