地球

To avoid the new thinking of Copernicus that the sun is the center and the earth moves around it once a year and turns on itself once a day, to keep the old thinking of Ptolemy, earth at the center, you need this complicated system of interlocking spheres and gears.

为了排除哥白尼的新理论，也就是：太阳的宇宙中心，地球每年绕日公转一周每天自转一周，并维护托勒密旧学说也就是：以地球为中心，你需要这套球体与齿轮纠缠的复杂系统。

Pressure, density and acceleration of gravity are important parameters in the earth interior. The value of these physical properties is provided by Preliminary Reference Earth Model PREM.

压强、密度及重力加速度是地球内部物质的最重要的物理参数，而"初步参考地球模型"给出了这些物理特性的一些具体数值。

This site, produced by the State and University Library, Gottingen and the University Library 'Georgius Agricola', Freiberg, Germany, provides annotated links to quality websites in earth sciences and geography. It is aimed at undergraduates.

该站点是一个地球科学数据门户网关，它由德国Goettingen州立大学图书馆创建的，它详细的介绍了许多的关于地球科学和地理学的网站，它的内容大多是面向大学生水平的。

We all live on the same planet, which is witnessing an alarmingly rapid increase in its atmospheric temperature.

我们都生活在同一个地球上，而我们赖以生存的地球大气气温正以惊人的速度增长。

They increase albedo of the Earth and serve as the basis of its global freezing up.

它们增加了地球的反射率，并成为地球全球冰封的基础。

Based on these theories, it develops a GIS map projection software using Visual C++ as a platform. The software consists of two parts: analytical ordinal transformation and analytical athwart transformation. Analytical athwart transformation implements map projective transformation with coefficients obtained through numerical method, which is also the main idea of this paper. Map projective transformation process is illustrated with the examples of Mercator projection and conic projection.

地图投影建立了平面上的点(用平面直角坐标或者极坐标表示)和地球表面上的点之间的函数关系，而地理信息系统以平面直角坐标形式通过计算机图形学的方法表示2维或3维地理空间信息，因此，地图投影起到了地球空间与地理信息系统之间的坐标转换的桥梁作用[1]。

This project aims to construct new threedimensional structures of the Earth's interior in different scales.

20世纪末，空间对地观测技术的发展，获得了地球表面清晰的图像，使人们可以实时地观测地球水圈和大气圈的结构、状态和运动过程，及其与生物圈的相互作用，这是地球系统科学革命性的进展。

In order to protect it and its inhabits from the giants, Odin and his brother surrounded the earth with a fence made from the eyebrows of the Ymir.

为了保护地球以及地球上的居民免受巨人们的攻击，奥丁以及他的兄弟用伊米尔的眉毛做成一道篱笆，围在地球周围。

To preserve it and its inhabitants from the giants , who dwelt in d6tunheim, odin and his brother surrounded it with a fence made from the eyebrows of the Ymir

为了保护地球以及地球上的居民免受住在尤通汉姆山巨人们的攻击，奥丁以及他的兄弟用伊米尔的眉毛做成一道篱笆，围在地球周围。

Before the Small Steps Program began in 1946 using V-2 rockets to take images from space, the highest pictures ever taken of the Earth's surface were from the Explorer II balloon, which ascended 13.7 miles in 1935, high enough to discern the curvature of the Earth. The V-2 cameras reached more than five times that altitude and clearly showed the planet set against the blackness of space.

在开始于1946年的用V-2火箭从太空拍摄影象的&小步工程&之前，曾经拍摄的地球表面的最高的照片是用&探测者2号&气球拍的，气球在1935年上升到了13.7英里（22.05公里），高到足以看清地球表面的弯曲。V-2火箭上的照像机达到了那个高度的5倍以上，并清楚地显示了衬托在黑色太空里的地球。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。