地球生命的起源充满谜团和矛盾。
The origins of life on Earth bristle with puzzle and paradox.
一队科学家们认为：火山流岩有可能在地球生命的起源中扮演者至关重要的角色。
Volcanic rock rafts could have played a key role in the origins of life on Earth, a team of scientists suggests.
浮游植物--一种微小的水生植物，可能在地球生命的起源中发挥着重要的作用。
One microscopic aquatic organism plays a major role in making life on earth possible: phytoplankton.
生命可能起初存在于另一颗行星，也许就是离得最近的火星，而后通过某种途径来到了地球，而非起源于此。
Life could have existed on another planet, maybe even one as close as Mars, and then made its way to Earth instead of originating here.
这是一个促使我们去发现关于人类、生命、地球和宇宙起源的中心问题。
It's a central human question that drives us to wonder about origins-of humans, life, the Earth, the Universe.
但是寻找这种不能智能应对有害环境的微生物并不能告诉我们地球上或者宇宙其他地方生命的起源。
But finding microbes that are unusually clever at adapting to hostile environments tells us nothing about the origin of life on Earth — or anywhere else in the universe for that matter.
1并不是个孤独的数字。一项新数据分析确定地球上所有生命都起源于一个共同的祖先。
但是寻找这种不能智能应对有害环境的微生物并不能告诉我们地球上或者宇宙其他地方生命的起源。
But finding microbes that are unusually clever at adapting to hostile environments tells us nothing about the origin of life on Earth - or anywhere else in the universe for that matter.
长期存在海洋可能充满了细菌微生物，那时，也被人们认为是地球生命起源的时候。
Long lived oceans may have teemed with microbes at a time when the life is thought to have also been starting on Earth.
有些理论怀疑生命是否真的起源于地球，他们认为生命并非诞生于地球，而是来源于一个遥远的世界或是某颗陨落到地球上的彗星或小行星的内部。
Some question whether life began on Earth at all, asserting instead that it came from a distant world or the heart of a fallen comet or asteroid.
如果这种想法行得通，这些新细胞——丘奇称之为“镜像生命(mirror life)”——足以回答关于地球上乃至全宇宙生命起源的最深奥问题。
If it worked, those new cells-church called them "mirror life" -could answer one of the deepest questions about the origin of life, not just here on Earth but everywhere in the universe.
关于地球上生命的起源有好几种说法。
There are several sayings about the origins of life on earth.
大约在三十亿年前，地球是一个海洋的星球，我们这个行星上的生命起源于蓝色的海洋之下。
Earth is an ocean planet. About three billion years ago, life on our planet began in the deep blue seas.
据英国《每日邮报》8月9日报道：通过对坠落地球之前已存在了数十万亿年陨石进行分析，美国宇航局的科学家们发现地球上的生命或许起源于外太空。
Life on Earth may have its origins in outer space, according to NASA research. Scientists have analysed meteorites that formed billions of years ago before falling to Earth.
像彗星这样的冰状天体曾给年轻的地球提供水和碳基分子，从而促进了地球上生命的起源。
Icy objects such as comets may have helped start life on Earth by delivering water and carbon-based molecules to the young planet.
根据研究生命起源的人们所作的工作，我们必然会得出这样的结论：如果设想有一颗行星和我们地球的情况基本相似，那几乎肯定会产生生命。
We must conclude from the work of those who have studied the origin of life, that given a planet only approximately like our own, life is almost certain to start.
他的关于地球上生命起源的理论站不住脚。
His theory about how life on Earth began doesn't hold water.
这一趟的火星任务希望能解答长久以来的疑惑，这或许能对地球生命的本质和起源有进一步的了解。
This round of Mars missions hopes to answer lingering questions which may cast light on the nature and origin of life on Earth.
分子学家依靠研究这些化合物来寻找地球上生命起源的线索。
Molecular scientists study such compounds for clues about the origins of life on Earth.
因为就算是细菌，其生物性已经很复杂了，所以科学家认为细菌起源于地球上更早的生命形式。
Since even bacteria are biologically complex, scientists think they arose from life forms that got a foothold on Earth even earlier.
地球的生命是如何起源的？
从生命的起源上来看，动物和人都是作为地球的生命形式而存在的。
Observing from the origin of life-beings, both animals and human beings exist as a certain kind of living forms on the earth.
生命在早期海洋中的起源比地球的形成晚了十亿年。
Life originated in the early seas less than a billion years after the Earth was formed.
生命在早期海洋中的起源比地球的形成晚了十亿年。
Life originated in the early seas less than a billion years after the Earth was formed.
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