火星的大气层只含有微量的水。
宇宙飞船进入地球大气层时被烧毁。
The spacecraft burned up as it entered the earth's atmosphere.
重返大气层的航天器受到重力的作用。
Spacecraft which are re-entering the earth's atmosphere are affected by g forces.
减少大气层中的二氧化碳含量极其重要。
Reducing levels of carbon dioxide in the atmosphere is of critical importance.
该操作台会在重新进入地球大气层时烧掉。
The station would burn up on reentry into the Earth's atmosphere.
我们实际上改变了地球大气层的化学成分。
We have literally altered the chemistry of our planet's atmosphere.
哥伦比亚号航天飞机将在明天上午重进地球大气层。
The shuttle Columbia will re-enter Earth's atmosphere tomorrow morning.
航天飞机重返地球大气层时因有摩擦力而减慢速度。
The force of friction slows the spacecraft down as it re-enters the earth's atmosphere.
火星周围有一个薄薄的大气层，几乎全由二氧化碳构成。
Mars has an insubstantial atmosphere, consisting almost entirely of carbon dioxide.
该项目将使科学家们对地球大气层正在发生的情况有更新的了解。
The project would give scientists new insights into what is happening to the Earth's atmosphere.
这还有大气层呢。那应该算进来吗？
在大气层的上层，它会燃烧。
科学家发现金星有大气层。
如果大气层和地球的一样，这是可能的。
If the atmosphere were like that of the earth, this might be possible.
宇宙飞船重新进入地球大气层时烧毁了。
The spacecraft burned up when it re-entered the earth's atmosphere.
相比之下，类地行星最多只有稀薄的大气层。
By comparison, the terrestrial planets have meager atmospheres at best.
在地球大气层中燃烧。
在海底和在大气层外的人有着类似的感受和情绪。
The feelings and the emotions of a man beneath the sea will be much like those of a man beyond the atmosphere.
这个网会捕获垃圾，然后将其拉到地球大气层中烧掉。
The net catches the junk and then pulls it into the earth's atmosphere to burn up.
其次，极地的大气层很薄，所以加热它所需要的能量很少。
Second, the polar atmosphere is thin, so little energy is required to warm it.
科学家们认为在大气层下存在着一层由碳和氧组成的稀薄地壳。
Under the atmosphere, scientists think there is a very thin crust of carbon and oxygen.
不过，要改变大气层使人类能够在那里生活，还需要更长的时间。
It will take a bit longer, though, to transform the atmosphere so that human beings could live there.
热也使我们的环境变得适宜生存，而且一些紫外线会穿透大气层。
Heat, too, makes our environments tolerable and some ultraviolet rays penetrate the atmosphere.
地球大气层中的二氧化碳分子像一个单向屏一样影响着地球的热量平衡。
The molecules of carbon dioxide in the Earth's atmosphere affect the heat balance of the Earth by acting as a one-way screen.
如果我们要保护大气层，这些新工厂必须对环境无害，这一点至关重要。
If we are ever going to protect the atmosphere, it is crucial that those new plants be environmentally sound.
由于月球没有大气层，它的表面不会受到侵蚀，所以它保留了早期历史的痕迹。
Because the Moon has no atmosphere, its surface is not subject to erosion, so it retains the marks of its early history.
我们太阳系的其他行星缺乏氧气大气层，这有助于解释为什么地球上存在生命。
Other planets in our solar system lack the oxygen atmosphere that helps explain why life exists on Earth.
木星的行星有非常厚的大气层，且由不同数量的氢、氦、甲烷和氨等元素组成。
The Jovian planets have very thick atmospheres consisting of varying amounts of hydrogen, helium, methane, and ammonia.
这样的风暴有时会包围整个地球，并改变大气层的特性，使得 EDL更加棘手。
Such storms can sometimes envelop the entire planet and change the characteristics of the atmosphere, making EDL far trickier.
有的细菌利用光合作用所产生的氧气，进一步改变了大气层，使其成为今天的样子。
Bacteria that used oxygen produced by photosynthesis further altered the atmosphere to what we find today.
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