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AIM has also found a strong resemblance between the noctilucent clouds and tropospheric clouds that hover near Earth's surface, which suggests that the dynamics of near-space weather may not be incredibly strange after all.

&他们如此微细，不会散光&，托马斯说。同时，AIM 卫星也发现，夜光云与漂浮在地球表面的对流层云极其相似。这说明，近太空的空气动力并非不可想象。

Noctilucent Clouds or Polar Mesopheric Clouds: This is an extroadinarily rare cloud formation that occurs out on the verge of space between 82km to 102 km from the earth's surface.

夜光云层又被称为极地中层云：这种云层极其罕见，只形成于距离地表82-102公里的大气空间边缘部位。

The adoption of the International Celestial Reference System and the changes of observational strategy call for the use of departure point on the moving equator independently from Earth's orbital motion. A Nonrotating Origin, proposed by Guinot, is selected.

国际天球参考系的使用、观测精度的提高和方法的改善要求采用与地球轨道运动无关的运动赤道上的起算点， Guinot提出的非旋转原点可作为这样一种选择。

Content of the Earth's crust is very rare, the Russian chemist in 1827 Ozan platinum ore from the ruthenium found.

地壳中含量很稀少，俄国化学家奥赞在1827年从铂矿石中发现了钌。

Penumbral eclipse occurs in the period, the moon will be dimmer, but the limb would not be obscured by the Earth's shadow.

在半影月食发生期间，月亮将略为转暗，但它的边缘并不会被地球的影子所阻挡。

Increases in aerosol have great implications in human health effects, visibility reduction and perturbing the Earth's radiation balance, thus climate system.

气溶胶的增加对人类健康有很大的影响，可见度降低和扰乱地球辐射平衡，从而影响气候系统。

First and foremost, we must take positive steps right now to put an end to the plundering of the Earth's natural resources.

首先，我们必须立即采取积极措施制止掠夺地球的自然资源。

"The moving waters at their priestlike task Of pure ablution round earth's human shores, Or gazing on the new soft fallen mask Of snow upon the mountains and the moors--"

不断望着海滔，那大地的神父，用圣水冲洗人所卜居的岸沿，或者注视飘飞的白雪，象面幕，灿烂、轻盈，覆盖着洼地和高山

Rajendra K Pachauri, Director-General of The Energy and Resources Institute, which is also the books' co-publisher, said:"It is important that children understand the influence of human actions on the Earth's climate and the measures that can be taken to control it."

同获诺贝尔奖的帕乔里博士是能源与资源研究所所长，也参与此书的出版，他说：「让儿童了解人类行为对地球气候的影响，以及能采取何种措施来控制它是非常重要的。

Resultant energetic particles such as electrons and protons rain down near the Earth's poles and impact the air. The impacted air molecules temporarily lose electrons, and when oxygen molecules among them reacquire these electrons, they emit green light.

极光是由来自太阳的高能粒子冲撞地球的磁场所触发的；其结果是高能量的电子和质子在地球的极区附近撞击大气，让被撞击的空气分子短暂失去电子，如果是氧分子重新得回这些电子，就会发出绿光。

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。