水覆盖了地球表面的大部分。
我们地球表面的70%是水。
臭氧在距地球表面12至30英里的地方形成一个保护层。
Ozone forms a protective layer between 12 and 30 miles above the Earth's surface.
距离地球表面5百万公里。
地球表面最有趣的特征之一就是盾状火山。
One of the most interesting features on the surface is, in fact, the shield volcanoes.
更多的红外辐射将被吸收并重新辐射回地球表面。
More infrared radiation would be absorbed and reradiated back to the Earth's surface.
地球表面由不断移动和相互碰撞的刚性板块组成。
Earth's surface consists of rigid plates that are constantly shifting and jostling one another.
地球表面低重力直接导致了火星上火山的巨大高度。
The great height of Martian volcanoes is a direct consequence of the planet's low surface gravity.
然而，如果钻石要存活，它们必须迅速地飞向地球表面。
If diamonds are to survive, though, they must shoot toward Earth's surface quickly.
它们阻挡了大部分的太阳能，使它永远无法到达地球表面。
They block most of the solar energy so it never reaches Earth's surface.
据估计，地球表面另外四分之一的土地正面临沙漠化威胁。
It has been estimated that an additional one-fourth of the Earth's land surface is threatened by this process.
占地球表面四分之三的海洋可以被看作是我们巨大的蓄水池。
The oceans that cover three quarters of the Earth's surface can be thought of as our great water reservoirs.
这些发展导致了重大变化，如地球表面的进一步侵蚀和森林砍伐。
These developments have caused major changes like additional erosion of the Earth's surface and deforestation.
除了地球表面的铁以外，一定有什么东西吸收了植物产生的大量氧气。
Something in addition to the iron on Earth's surface must have absorbed much of the oxygen produced by plant life.
作为地质学家，我们研究地球表面的沉积层以估算过去地质时期的年代。
As geologists, we examine layers of sediment on the Earth' s surface to approximate the dates of past geologic time periods.
所以沉积物被运输，然后沉积，随着时间的推移，它在地球表面形成了层。
So sediment is transported and then deposited and it forms layers on the Earth's surface over time.
深海热泉是地球表面出现的裂缝，我们在这里提到的裂缝是在海底深处发现的。
Hydrothermal vents are cracks in the Earth's surface that occur, the ones we are talking about here are found deep at the bottom of the ocean.
构成地球表面的那些构造板块极其缓慢但剧烈的运动，也可能导致异地物种形成。
Allopatric speciation can also be brought by the imperceptibly slow but colossal movements of the tectonic plates that make up Earth's surface.
为了调和这两个事实，科学家们假设，几乎所有产生的氧气都被地球表面的铁吸收了。
As a way of reconciling these two facts, scientists have hypothesized that nearly all of the oxygen being produced was taken up by iron on Earth's surface.
很明显，除了利益和民族主义，其他紧急的事物将迫使人类在地球表面留下他们的足迹。
It is clear that imperatives other than profits or nationalism will have to compel human beings to leave their tracks on the planet's reddish surface.
地球表面并不是由构成地壳的单块岩石构成，而是许多紧密相连的“构造板块”，像一块巨大的拼图。
Earth's surface is not made up of a single sheet of rock that forms a crust but rather a number of "tectonic plates" that fit closely, like the pieces of a giant jigsaw puzzle.
当储层足够大时，这种炽热岩石的一个球体强行通过上地幔上升到地球表面，在地形上形成一个宽阔的隆起。
When a reservoir is sufficiently large, a sphere of this hot rock forces its way up through the upper mantle to Earth's surface, creating a broad bulge in the topography.
即使地球表面并没有被这种轰炸所灭绝，但除了最原始的生命形式之外，几乎不可能有其他生命形式幸存下来。
Even if Earth's surface were not actually sterilized by this bombardment, it is unlikely that any but the most primitive life-forms could have survived.
太平洋面积非常大，覆盖了地球表面的30%，其海水升温产生的额外热量足以引发世界各地一系列的气候变化。
So large is the Pacific, covering 30% of the planet's surface, that the additional energy generated by its warming is enough to touch off a series of weather changes around the world.
复杂的生命在地球表面进化，而不是在火星或太阳系的其他行星上，因为在那些行星上，早期的地表生命被紫外线杀死了。
Complex life evolved on the Earth's surface, but not on Mars or other planets in the solar system because on those planets, early surface life was killed by UV radiation.
地球表面近四分之三被水覆盖。
Nearly three quarters of the earth's surface is covered by water.
它是蓝色的，因为水几乎覆盖了地球表面的四分之三。
It's blue because water covers almost three quarters of the Earth's surface.
在地球表面，可以通过改变地球磁场强度来检测这些风暴。
At the Earth's surface, these tempests can be detected by changes in the strength of the Earth's magnetic field.
在某些情况下，地下水位到达地球表面，在那里以河流、湖泊和沼泽的形式表现出来。
In some cases, the water table reaches Earth's surface, where it is expressed as rivers, lakes and marshes.
一些已经从地球表面消失了，其他的正在慢慢地死亡，但所有的都经历了变化，因为它们已经接触到一个不断扩张的机器文明。
Some have vanished from the face of the earth, others are dying slowly, but all have undergone changes as they have come into contact with an expanding machine civilization.
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