Billions years ago, our ancestors gambled and took chance with life!
亿万年前，我们的祖先打了一个赌而且获得了生的机会。
We are the products of evolution, and not just evolution that occurred billions of years ago.
我们是进化的产物，并且不仅仅是发生在数十亿年前的进化。
Astrogeologists suspect that these scarps having formed billions of years ago as the planet's surface cooled and shrank.
太空地质学家猜测这些陡坡是在几十亿年前当行星表面冷却收缩时开始形成的。
It's possible the star was originally part of the Milky Way when it collided with the other galaxy billions of years ago.
这颗恒星很可能是银河系几十亿前年与其他星系碰撞时最原始的一部分。
Billions of people now carry around tiny devices that are more powerful than the desktop computers of a few years ago.
数以十亿计的人们现在每天随身携带着比几年前的桌面电脑功能还要强大的小设备。
The crater was formed by a meteorite impact billions of years ago, and if there were water on the planet back then, it would have accumulated in the crater, turning it into an evaporative lake.
这一撞击坑是由几百万年之前一颗陨石的撞击形成的，如果当时这颗星球上有水，这些水可能已经聚集到了撞击坑里，使其变成一个蒸发湖。
If astronomers could observe metallicity gradients in spiral galaxies billions of light-years away, we could see how steep the gradients were billions of years ago and thus how they change over time.
如果天文学家能够观测到十亿光年外的螺旋星云的金属丰度梯度，我们就可以知道亿万年之前的梯度有多大，因此也就可以知道它是如何随时间变化的。
The precious metals that we see on Earth today may be largely heavenly in nature, coming from the sky billions of years ago, scientists now find.
我们今天在地球上所看到的贵金属本质上可能主要是天上的，来自几十亿年前的太空，科学家们现在发现。
Trying to recreate an event that happened billions of years ago is a daunting task, but many scientists believe that, like the emergence of life itself, it is still possible.
想要重现几十亿年前的一件事是个艰巨的任务，但仍有许多科学家相信，就像生命本身的出现一样，这还是有可能的。
Several years ago, Libya was primed to dole out some of the billions the oil state held in cash during its time as an international pariah.
几年前，利比亚在作为国际弃儿期间曾准备好把这个石油国家手上的数十亿美钞少量发放出去。
Billions of years ago, free-living bacteria are thought to have become incorporated into living cells as energy-providing mitochondria.
据测在数十亿年前，一些自由生活的细菌进入到活细胞内部，变为负责提供能量的线粒体。
From the moment life began on the planet billions of years ago, the climate has swung drastically and often abruptly from one state to another - from tropical swamp to frozen ice age.
自从几十亿年前地球上出现第一个生命开始，气候就剧烈地变化着，时常是从一个时期突然进入另一个时期——从炎热的湿季到冰冻期。
Genesis hypotheses include a galaxy collision billions of years ago and the gravitational effect of a central bar that has since vanished.
对于这个星系起源有几种假设，其中包括数十亿年前的一次星系撞击以及重力对中间消失地带的影响。
SOMETHING remarkable has swept through Asia in recent years, enriching literally billions of people far beyond even what optimists would have imagined just a few decades ago.
近年来，整个亚洲都取得了非凡的成就，数十亿人由此而富裕起来。仅在数十年前，即便是最乐观者也无法想象到即将发生的这一切。
The great Andromeda galaxy owes a bit of its beauty to a dalliance with another galaxy billions of years ago, according to new data gathered with NASA's orbiting Hubble Space Telescope.
根据美国国家航空和宇宙航行局轨道运行哈勃太空望远镜新收集的数据，大仙女星座的美丽少许源自亿年前与另一星系的嬉戏。
Such encounters between dwarf galaxies are normally seen billions of light-years away and therefore occurred billions of years ago.
矮星系之间的如此遭遇通常发生在几十亿光年之外，也就是几十亿年之前。
A tiny molecule harvested from a soil bacterium on Easter Island that evolved billions of years ago for no obvious purposes should have nothing to do with human beings.
复活节岛上土壤中的一种微生物产生的化学物质在亿万年的演变中，本应与人类没有直接关系。
Fossil stromatolites are regarded by some people as evidence of the same thing having gone on billions of years ago.
而层叠岩石的化石被一些人认为是几十亿年前发生着同样过程的证据。
If their speed had been constant, they would all have been on top of one another billions of years ago. Was this how the universe began?
若它们的速度恒久不变，那它们在上一个几十亿年前就存在了。那宇宙是怎么出现的？
These may be primitive bacteria whose close relations are known to have thrived billions of years ago.
这些可能是原始的细菌，其近亲物种曾经在亿万年前繁荣过。
There's a general impression that the moon is geologically dead, that anything of significance that happened geologically up there happened billions of years ago.
普遍认为月球无任何地质活动，任何有意义的地质学变化结束于数十亿年前，而这些年轻的裂谷证明了事实并非如此。
Until recently, Mars' color was thought to be a product of liquid water, which scientists think flowed over the planet's surface billions of years ago, rusting rocks.
一直以来，火星呈现的颜色被认为是液态水的作品，科学家认为是亿万年前流淌在这一行星表面的水锈蚀了岩石而造成的结果。
One theory is that they came from comets and asteroids, which pounded the lunar surface billions of years ago, and later drifted to the poles.
有一种说法是，它们来自于数亿年前撞击月球的慧星和小行星，后来转移到了极点。
Scientists have analysed meteorites that formed billions of years ago before falling to Earth.
科学家们是在分析检验了在数十亿年之前坠落到地球上的陨石之后得出这一发现的。
A product or idea that might have been marketed just to the United States and to Europe 20 years ago could be sold to billions more in the future.
20年前卖到美国或欧洲的新产品或新创意，未来将价值数十亿美金。
"Elliptical galaxies were thought to have made all of their stars billions of years ago," said astronomer Mark Crockett of the University of Oxford, leader of the Hubble observations, in a release.
椭圆星系被认为是在几亿年前就已经形成了它们的所有行星。
The “huge irony”, says Ben Wood of CCS Insight, a market-research firm, is that only five years ago the industry was scrabbling for customers for the new networks in which it had invested billions.
仅仅5年前这项已经投入数十亿的产业还在为新网络摸索消费者，市场调查公司CCSInsight的本伍德认为这是“巨大的讽刺”。
And all those billions of years ago, scientists believe that microbes formed some distinctive features in the Pilbara rocks - features called "stromatolites" that can be seen and studied today.
科学家们相信，数十亿年前，Pibara岩群含有细菌形成的独特特征—即如今看到和研究的“叠层石”的特征。
And all those billions of years ago, scientists believe that microbes formed some distinctive features in the Pilbara rocks - features called "stromatolites" that can be seen and studied today.
科学家们相信，数十亿年前，Pibara岩群含有细菌形成的独特特征—即如今看到和研究的“叠层石”的特征。
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