我们是地球上最大的初创企业。
我们是地球上最为复杂的零件组装品！
We are one of the most complicated assemblies of parts and pieces on the face of this earth!
我们是地球的孩子，而不是她的主人！
它们一定会认为我们是地球上最伟大的猎手。
慈济志工黄淑云：「我们是地球的一份子，不只要守护环境也要心灵环保。」
Tzu Chi volunteer, Huang Shuyun:We are part of the Earth. While we clean up we also clean out our inner garbage.
我们地球表面的70%是水。
地球是我们的家园。
我认为帮助我们的地球是每个人的责任。
永恒的争论是资金紧张，我们在地球上有更紧迫的问题。
The perpetual argument is that funds are tight, that we have more pressing problems here on Earth.
我们怎么知道地球是一个更小的球，绕着其中一颗恒星——太阳转呢？
How do we know that the Earth is a smaller ball turning around one of those stars, the Sun?
我们必须想象早期的地球是岩石材料、金属和封闭气的混合物，受到较小的星子的持续轰击，没有多少大气。
We must imagine the early Earth as a mixture of rocky materials, metals, and trapped gases, subject to constant bombardment by smaller planetesimals and without much of an atmosphere.
地球上和我们思想中正在发生的变化是有史以来人类事务中发生的最伟大的变化之一。
The change that is taking place on earth and in our minds is one of the greatest changes ever to take place in human affairs.
我们讨论的是地球上所有云层的平均效果。
We are talking about the effect of all the clouds on earth averaged together.
因此，在地球上生命开始的时候，我们所看到的金星是一片温暖的海洋，这片海洋可能富含在岩石海岸和火山口周围飞溅的有机分子。
Thus, our picture of Venus at around the time life was getting started on earth is one of warm oceans, probably rich with organic molecules splashing around rocky shores and volcanic vents.
与可见光波不同的是，这些无线电波可以较容易地穿过太空中的各种气体和灰尘，穿过我们地球的大气层。
Unlike visible light waves, these radio waves can get through the various gases and dusts in space, and through our own earth's atmosphere comparatively easily.
对地球来说幸运的是，社会科学和行为经济学或许可以为我们做到这一点。
Fortunately for the earth, social science and behavioral economics may be able to do that for us.
我们记录辐射收支的一种方法是观察地球上不同表面的反照率。
One way we keep track of the radiation budget is by looking at the albedo of the different surfaces on the planet.
对地球来说幸运的是，社会科学和行为经济学或许可以为我们做到这一点。
Fortunately for the planet, social science and behavioural economics may be able to do that for us.
我们是这个世界的奇迹和神秘，因为持久的自由和地球的富饶一样是一种祝福。
We are the marvel and the mystery of the world, for that enduring liberty is no less a blessing than the abundance of the earth.
我们在这地球上是来无所事事的。
基本上，太阳每天为地球提供几乎无限的能源，但问题一直是我们该如何利用这能源。
The sun basically provides Earth with virtually unlimited source of energy everyday, but the problem has always been how do we tap this source of energy.
其观点是，我们正在以一种超过使其可持续的额度从我们称为“地球环境银行”的账户余额中提现；我们的生活已经超出了我们的生态的承受能力。
The idea is that we are taking more out of what you might call the planet's environmental bank balance than it can sustain; we are living beyond our ecological means.
如果我们承认人类对地球的操纵是一种破坏，我们也可以认为，人类的努力可以帮助我们在未来几个世纪建立一个破坏性较小的世界。
If we acknowledge that human manipulation of the Earth has been a destructive force, we can also imagine that human endeavours can help us build a less destructive world in the centuries to come.
我们需要的是一个在赤道处地面上的非常高的塔，以及沿地球静止轨道绕地运转的卫星。
What we need is a really tall tower here on the ground right at the equator and a satellite in geostationary orbit.
真正的太空竞赛是我们是否会在太空计划的资金耗尽之前，在地球以外的其他星球建立殖民地。
The real space race is whether we will colonise off Earth on to other worlds before money for the space programme runs out.
全球变暖可能给地球带来灾难性的影响，我们是时候应该保护地球了。
Global warming could bring disastrous effects to Earth, so it is high time for us to protect our earth.
我们都知道虽然地球75%都被水覆盖，但是其中只有3%是淡水。
We all know that though 75% of the earth is covered with water, only 3% of it is fresh water.
例如，如果地球真的是圆的，我们可以预测，我们中的任何一个人，沿着同一个方向不断前进，最终会回到起点。
For example, if the world is really round, we can predict that any of us, going on and on in the same direction, should eventually find ourselves back where we started.
地球是我们的母亲，我是地球的儿子。
银河系是地球所在的星系，而我们大多数人从未见过它，这不是很奇怪吗？
Isn't that strange that the Milky Way is the galaxy that the planet earth is in, and most of us have never seen it?
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