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Earth Gets Soft in the Middle Earth 's middle layer may be squishier than previously thought .

地球的中间层可能比之前预想的更湿，更软。

Caption:: Photographed by an Expedition 7 crewmember onboard the International Space Station, this image shows the limb of the Earth at the bottom transitioning into the orange-colored troposphere, the lowest and most dense portion of the Earth's atmosphere.

在太空中看地球的其中一个很美丽的景色，可以说是日夜分界位置时看到的地球薄薄的大气层，那时候的大气层有两层颜色，由宇宙的黑色到蓝色，再由蓝色到橙色，可说是漂亮极了的画面。

Dr Bertell says it was 10 years before American scientists realised that it would be hundreds of years before the vital earth-shielding Van Allen belts of the earth's atmosphere would recover from such onslaughts.

伯泰尔博士说那是在美国科学家意识到关乎生命、屏障地球的大气层范艾伦带要从这样的猛烈冲击中恢复需要数百年时间的10年前。

The tool bag, for example, circled Earth for more than eight months before finally destroying itself in Earth's atmosphere.

例如，这个工具包围绕地球大约运行了8个月，然后才在地球大气层里彻底燃烧掉。

This process applications MATLAB animation to simulate the Earth s return to Earth from space satellite track line.

详细说明：此段程序应用MATLAB的动画模拟了地球卫星从太空返回地球的轨道路线。

If the moon Benying Earth and the moon than the distance between the small, cutting-edge to the moon Benying not the earth's surface, then in the video pointed out the extension of small shadow cone (called pseudo-Benying) sweep of the area can be seen on the Environment and Food .

如果月球本影比地球与月球之间的距离小，月球本影的尖端到不了地球的表面，那么在影尖延长出来的小影锥扫过的地带可以看到日环食。

Orion was low in the west after sunset last spring, and, in early summer, this constellation was behind the sun as seen from Earth. Orion only returned to visibility in Earth's sky about a month ago. See our July 29 sky chart.

在去年的春季，猎户星座在太阳下山前处于西方的底部，在初夏的时候，从地球上望过去，这个星座处于太阳的后面，仅仅一个月左右，猎户星座就回到地球的天空了(请看我们7/29的天空图)。

Life on Earth is known as carbon based, and carbon is as necessary to the life cycle of Earth's organisms as we are to the carbon cycle.

地球上的生命是被称为碳为基础，碳是必要的生命周期，地球的有机体，因为我们是碳循环。

Plate tectonics, mountain ranges, volcanoes, and earthquakes are geological phenomena that can be explained in terms of energy transformations in the Earth's crust[3], and might be thought of as the process by which the earth resurfaces itself.

地球的板块结构，山脉，火山和地震均可解释为由于地壳的能量转换所生成的地质现象，也认为是地球自行生成新的地表时所经历的过程。

According to existing results, it is generally thought that during the Neoproterozoic Earth had experienced several most severe global glaciations in Earth's history.

根据现有的研究结果，地球在新元古代时期确实经历了数次地球历史上最为严重的全球性冰川期，但地球是否被完全冰封还需要更充分的古地质和古生物方面的证据来证明；利用气候模式对各种可能的外部强迫的模拟试验表明&冰雪地球&是很难形成的，并且，如果地球进入完全被冰封的状态，它将是难以被融化的；关于新元古代时期剧烈的气候变化对寒武纪生命大爆发所起的作用存在2种观点，一种认为气候变化导致了原始生命的基因突变并诱发了寒武纪生命爆发，另一种认为这种影响主要是生态方面的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。