The moon rolls about the earth.
月亮绕地球运行。
Kids enjoy time outdoors while learning about the earth.
孩子们喜欢在户外学习有关地球的知识。
The Earth Day was created to remind people to care about the earth.
设立地球日是为了提醒人们要关心地球。
How much do you know about the Earth?
你了解地球多少？
As time goes on, we know more about the earth.
随着时间的推移，我们对地球将更加了解。
The book which tells us about the earth is interesting.
讲述有关地球的那本书很有趣。
They put a weather satellite into orbit about the earth.
他们把一颗气象卫星送入环绕地球的轨道。
You only think about the earth, but consider the sky and the sea.
你只想到地球，但是考虑到天空和海洋。
And what about the earth if most of animals were as wise as human beings?
如果大多数生物都像人类一样聪明又会怎么样？
His father, a philosopher on C Star, often tells him stories about the earth.
他的父亲是C星球上的一个哲学家，经常给他讲地球的故事。
To answer that question we must first understand some things about the earth itself.
要回答这个问题，必须首先要了解关于地球自身的某些事物。
These pictures are helping us learn more about the earth-its mountains, vegetation, and bodies of water.
这些照片在帮助我们了解更多的关于地球的信息-它的山脉、植被和水系。
These claims about the earth were seemingly obvious in previous centuries, but we now know them to be false.
在几个世纪以前，关于地球的这些说法看上去是很明显，但我们现在知道这些都是错的。
The Apollo missions were supposed to reveal the truth about the Moon. In fact, they taught us about the earth-and ourselves.
阿波罗计划的初衷是揭示月球的真相。实际上，透过该计划我们认识了地球和人类自身。
The Apollo missions were supposed to reveal the truth about the Moon. In fact, they taught us about the Earth - and ourselves.
阿波罗号的任务是探月，实际上，让我们认识的却是地球和我们自身。
Nicolaus Copernicus, the Polish astronomer noted for his revolutionary theory about the earth revolving around the sun, is often credited with a gastronomic achievement.
波兰天文学家尼古劳斯．哥白尼除了以其革新的「地球环绕太阳旋转」 论著称，据说在美食上也有成就。
He and the members of his society continued to support the idea that the Earth is flat and that those who disagree are part of a conspiracy to keep the truth about the Earth hidden.
他和该协会的其他成员继续支持地平说，还说不同意他们观点的人参与了阴谋来隐藏关于地球的这一实情。
I went to a shop in Santa Fe in New Mexico -- a trendy shop for concerned people, where there was a lot of hessian, and earthenware products and posters with slogans about the earth.
我来到新墨西哥州的圣达菲的一个专门为担心气候变暖的人们开设的商店里。那里有一些粗麻布，还有一些陶器和海报，上面印有关于保护地球的标语。
The first is a pair of planets, each about the mass of Jupiter, that whirl around their home star 15 light years from Earth in perfect lockstep.
第一个是一对质量与木星差不多的行星，这对行星步调一致地围绕距离地球15光年的母恒星旋转。
The nearest star to earth is about 4 light years away.
地球离最近的恒星大约为4光年。
The new planet is about ten times the size of the earth.
这个新发现的行星大约是地球大小的10倍。
The age of the earth is reckoned at about 4 600 million years.
估计地球的年龄大约为46亿年。
Scientists were debating whether an asteroid was about to hit the Earth.
科学家们在争论一颗小行星是否要撞上地球。
That's about the same distance as 337 round trips from Earth to Pluto.
这大约相当于从地球往返冥王星337次的距离。
An iridium-enriched sediment layer and a large impact crater in the Yucatn provide evidence that a large meteorite struck Earth about 65 million years ago.
尤卡坦半岛上富含铱的沉积层和一个巨大的陨石坑提供了证据，证明了约6500万年前，一颗大型陨石撞击了地球。
I wanna go over the different types of meteorites, and what we've learned from them about the formation of Earth, and the solar system.
我将介绍陨石的不同类型，以及我们能够从中了解到的有关地球和太阳系的形成的知识。
Since the dawn of civilization, people have been curious about the age of Earth.
自从文明出现以来，人们就一直对地球的年龄感到好奇。
He hopped about and pecked the earth briskly, looking for seeds and insects.
他跳来跳去，轻快地在土地上啄着，寻找种子和昆虫。
You know, I am still not too clear about the hydrologic cycle, the transfer of water back and forth between the earth and the atmosphere.
你知道，我仍然不是很清楚水文循环，也就是水在地球和大气之间的来回转移。
The scientists showed great concern about the warming of the earth.
科学家们对全球变暖感到非常担忧。
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