In boundless and indistinct galaxy, having a dirt is solar system, in solar system, a dirt is equivalent to a cell in our body, that is the earth that our mankind lives.
在茫茫的银河系中，有一粒灰尘是太阳系，在太阳系中，有一粒灰尘相当于我们身体里的一个细胞，那就是我们人类生活的地球。
The earth is solar system one of 8 major planet, also be the planet that ranks the 3rd close sun, be apart from the sun 1. 500 million kilometer. The earth is ” of La Qiu of a “ , because look at the past from aerospace, it resembles a sapphirine, because its surface great majority is water.
地球是太阳系八大行星中的一个，也是排名第三近的太阳的行星，距离太阳1。5亿公里。地球就是一个“蓝球”，因为从太空望过去，它像一颗蓝宝石，因为它表面大多数是水。
The earth is a big sphere. Equatorial radius 6378. 137 kilometre, extremely radius 6867. 52 kilometre, average radius makes an appointment with 6371 kilometre. Equatorial circumference is 40076 kilometre about. Earthly surface area is 5. Kilometer of 100 million square, among them 71% above are ocean, 29% for land. Deep-sea area but really big!
地球是个大球体。赤道半径6378。137千米，极半径6867。52千米，平均半径约6371千米。赤道周长大约为40076千米。地球表面面积是5。1亿平方公里，其中71%以上为海洋，29%为陆地。海洋的面积可真大！[ www.zUOwEnBa.NeT ]
The earth keeps moving, it from on the west eastwards rotation, at the same time around sun revolution. The earth has moon of —— of a natural satellite, the moon is circling the earth to rotate like earthly little brother.
地球不停地运动着，它自西向东自转，同时围绕太阳公转。地球有一个天然卫星——月球，月球就像地球的弟弟一样绕着地球旋转。
Scientists divide the world that having 4.6 billion years into structure of 4 big layers is: Group of hydrosphere, biosphere, rock and air are encircled, the earth from arrive again li of cent for: Lithosphere, mantle, centrosphere 3 much. Among them the lithosphere is 5262 kilometers, mantle 2390 kilometers. Centrosphere 6378 kilometers.
科学家们把有着46亿年的地球分成四大圈层结构是：水圈、生物圈、岩石圈和大气圈，又把地球从再到里分为：地壳、地幔、地核三大部分。其中地壳是5262公里，地幔2390公里。地核6378公里。
The earth passes 4.6 billion years evolve, formed present 4 ocean, 7 continent. 4 ocean are respectively: The Arctic Ocean, the indian ocean, Atlantic, Pacific Ocean. 7 continent are respectively: Asia, Africa, North America, South America, Antarctica, Europe, Oceanian.
地球经过46亿年的演变，形成了现在的四大洋、七大洲。四大洋分别是：北冰洋、印度洋、大西洋、太平洋。七大洲分别是：亚洲、非洲、北美洲、南美洲、南极洲、欧洲、大洋洲。
Pacific Ocean is the sea of the the biggest, deepest, brim and islands are most ocean on the world, it is an accord with actually marine old. It is located in between Asia, Oceanian, Antarctica and South America. North and south is the longest 15900 kilometre left and right sides, the thing is the widest it is 69000 kilometre left and right sides. Its gross area is 18134. Kilometer of 40 thousand square, average deepness is 3951 meters. The earth most trench of Ma Liya accept of 11034 meters of —— is in deepness in Pacific Ocean. A bit smaller than Pacific Ocean is Atlantic, that is to say Atlantic is the second in ocean, it occupies a ball to express an area to be 20% the left and right sides, primary area 9165. Kilometre of 50 thousand square, its average deepness is 3627 meters, most in wave amount to deep 9219 meters. Atlantic appearance enchantings, resemble “S” of a letter, be differentiated to silver coin into Beijing University West and Na Daxi for the bound with equator. Ocean is old 3 it is the indian ocean. Its area is kilometre of 70.56 million square, be located in Asia, Oceanian, blame is noted and Antarctica sees only. The Arctic Ocean is ocean old one, the area is small, temperature is low.
太平洋是世界上最大、最深、边缘海和岛屿最多的大洋，是名符其实的海洋老大。它位于亚洲、大洋洲、南极洲和南美洲之间。南北最长15900千米左右，东西最宽是69000千米左右。它的总面积是18134。4万平方公里，平均深度是3951米。地球最深度11034米——马里亚纳海沟就在太平洋中。比太平洋小一点的就是大西洋了，也就是说大西洋是海洋中的老二，它占球表面积为20%左右，原面积9165。5万平方千米，它的平均深度为3627米，最深处波多达深9219米。大西洋外形妖娆，像一个字母“S”，以赤道为界被划分成北大西洋和南大西洋。海洋老三是印度洋。它的面积为7056万平方千米，位于亚洲、大洋洲、非注和南极洲只见。北冰洋是海洋老幺，面积小，温度低。
The old of 7 continent is an Asia. Its area is the largest, population is most also. 8 what its cover earthly gross area. 7% , africa is the second, it is average height above sea level is higher, having ” of “ downy mainland say, africa is one of birthplace of world ancient mankind and ancient civilization, also be the native place of african. ” of Luo Bazhou of Europe of “ of European full name. It is old 6. The most powerful nation in North America is the United States, the United States also is the most powerful nation on the world. The nation with the most powerful South America is Brazil. Oceanian main country is Australia. Antarctica is very big also, but live without the mankind, much is penguin there.
七大洲的老大是亚洲。它面积最大，人口也最多。其覆盖地球总面积的8。7%，非洲是老二，它平均海拔较高，有着“高原大陆”之称，非洲是世界古人类和古文明的发源地之一，也是非洲人的老家。欧洲全称“欧罗巴洲”。是老六。北美洲里最强大的国家是美国，美国也是世界上最强大的国家。南美洲最强大的国家是巴西。大洋洲主要国家是澳大利亚。南极洲也很大，但是没有人类居住，那儿大部分都是企鹅。
Although the earth is a dirt in solar system, but extremely tremendous however to our mankind, extremely important also to us. It is beautiful in that way, have a lot of great rivers, mountain range, still have a lot of animals, so we should cherish an environment, had protected us this beautiful home.
地球虽然是太阳系里的一粒灰尘，但对我们人类来说却无比巨大，对我们也无比重要。它是那样美丽，有很多大河、山脉，还有很多的动物，所以我们要爱护环境，保护好我们这个美丽的家园。(文/杨千诺)