用英语介绍我们的地球外貌， 地球的英文介绍（简单一些）

Our Earth is a blue planet, with over 70% of the surface area under water. It looks like a ball with occasional landmass that can be seen from outer space, which we call continents. These continents are covered with green vegetation. But as our population grows, some of these forests are cut down and urbanized into small dots of cities. These cities light up during night and are beautiful to watch from the sky, they look like miniatures of the universe.

保护我们的地球（英语作文）~

We should save the earth The earth is the mother of mankind, the earth is our common home. We like clear water, blue sky, like watching seagulls flying; we like ice Piao, like to listen to Greenfield roar; we like to fly warbler grass long, like to listen to birds singing; we like to see the sea in the early morning sunrise, like a few nights at least Stars days. We hope that our earth more beautiful and more beautiful. However, due to irrational development, because the waste of natural resources, global ecological damage, pollution of all kinds more serious. Now, the world each year 600 million hectares of land become desert, 20 million hectares of forests are disappearing, the average of one hour there is a kind of species extinction. Also, the Earth's temperatures are rising, the Antarctic ice cap began to melt, sea-level will continue to rise, many of the world's coastal cities, islands, and large areas of land will be swallowed seawater. So, care for the environment is our common responsibility. As a small owner of Earth, we have to mind the world, look around. In life without one-time items; in a timely manner wash off the faucet; multi-curved waist do not litter anywhere in the threw peel; more than walk a few steps without crossing the green belt; many people around to remind the attention of environmental protection together. Environmental protection is a long-term and arduous task, let us start from a small, start now to make our planet more beautiful environment, climate and better! 我们要拯救地球 地球是我们人类的母亲，地球是我们共同的家园。我们喜欢碧海蓝天，喜欢看海鸥飞翔；我们喜欢冰封雪飘，喜欢听松涛轰鸣；我们喜欢莺飞草长，喜欢听小鸟欢唱；我们喜欢在清晨看大海日出，喜欢在夜晚数满天繁星。我们希望我们的地球更美丽、更漂亮。 但是，因为不合理的开发，因为各种自然资源的浪费，全球性生态破坏、各种环境污染越来越严重。现在，全球每年有600万公顷的土地沦为沙漠，2000万公顷森林在消失，平均一小时就有一种物种在灭绝。并且，地球的气温也在不断升高，南极冰冠开始溶化，海洋平面将不断升高，世界上许多沿海城市、岛屿和大量土地，将被海水吞没。所以说，爱护环境，是我们共同的责任。作为地球的小主人，我们要心系全球，着眼身边。在生活中不用一次性的用品；在洗手时及时关上水龙头；多弯弯腰不随地乱扔果皮纸屑；多走几步不穿越绿化带；多提醒周围的人一同注意环保。 保护环境是一项长期而又艰巨的任务，让我们从小事做起，从现在做起，使我们的地球环境更美、气候更好！

earth id the third planet in distance outward from the Sun。

也就是一个太阳日，才能绕轴自转完一圈，让太阳再度通过中天。地球公转的平均速度大约是29.8 km/s（107000 km/h），7分钟内就可行进12742 km（7,918 mi），等同于地球的直径的距离；约3.5小时就能行进约384000千米的地月距离。

地球绕太阳公转的轨道与太阳的平均距离大约是1.5亿千米（9300万英里），每365.2564平太阳日(365日6时9分10秒)转一圈，称为一恒星年。1990年，旅行者1号从64亿千米（40亿英里）拍摄到了地球的图像（暗淡蓝点）。
公转使得太阳相对于恒星每日向东有约1°的视运动，每12小时的移动相当于太阳或月球的视直径。由于这种运动，地球平均要24小时。

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