生物系统亿万年来都在这样做。
Biological systems have been doing this for billions of years.
而在亿万年以前，人类可能是这样的。
地球形成于亿万年前。
地球形成于亿万年前。
在繁荣的三月，该国已鼓励其亿万年轻人迁入城市。
In its march to prosperity, the country has encouraged hundreds of millions of its young people to move into cities.
据我们所知，地球大气中20%左右的氧含量已保持了亿万年之久。
As far as we can tell Earth's atmospheric oxygen has remained at about 20 percent for hundreds of millions of years.
我们在地球上受磁场的保护，而火星上的磁场早就在亿万年就消失了。
We on Earth have protection in the form of a magnetic shield. But that shield is dead on Mars, gone for billions of years.
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。
These may be primitive bacteria whose close relations are known to have thrived billions of years ago.
亿万年前，一条卑微的鱼在冈瓦纳古陆的湖泊和河流中游泳。
Hundreds of millions of years ago a humble fish swam in the lakes and rivers of the supercontinent Gondwana.
你也无法想起你已经经历了亿万年时间的艰巨和困难的旅程。
It is as well that you cannot remember the arduous and difficult journey you have made over eons of time.
人类这一未来前景的基础是，挖掘亿万年进化赋予我们的与生俱来的力量。
This view of the future of humankind is grounded in an appreciation of the biologically innate powers bestowed upon us by hundreds of millions of years of evolution.
在充满了不确定的劳动力市场上，全世界亿万年轻人正在找工作。
Hundreds of millions of young people around the world are searching for jobs in a very uncertain labor market.
已有几种不同的理论对金属丰度梯度在亿万年间如何变化作了推测。
Different theories predict how this metallicity gradient changes over billions of years.
这个体验是你在亿万年前就失去了的，为了体验二元性世界的时空。
It is one that you left behind you eons of time ago, to experience time and space in Duality.
沿路上大海、森林、半圆山尽收眼底，大自然诉说着亿万年的古老传说。
Along the road, the ocean, the forest, then Half Dome, nature tells grand stories from billions of years ago.
线粒体的前身是细菌，在数亿万年前它们的任务是为更大的细胞提供能量。
Mitochondria are former bacteria that were enslaved eons ago to generate energy for larger cells.
当这个故事向后跳跃到亿万年之后的未来时，人类的解决方案仍然没能给出。
As the story leap fros billions of years into the future, their list of solutions doesn't get any longer than none.
我们是一株亿万年苍老树干上最新萌发的绿叶，不单属于自身，更属于土地。
We are new budding leaves of one hundreds of millions aged trunk, not only part of ourselves, yet part of soil.
所以你会知道我们与你们连接了亿万年，没有什么比你们现在经历的更加重要。
So you will understand that we have been with you for eons of time, and none have been quite as important as the period you are in now.
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。
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.
人类的祖先离开非洲——人类的摇篮——的时间可能比科学家原先推测的要早上亿万年。
Humanity's ancestors may have departed Africa — the cradle of mankind — eons earlier than scientists have assumed.
它们当中有的已经存在亿万年，或者造成环境的大破坏，或者让世界变得更加丰富多彩。
Some have saved billions of lives, wreaked environmental havoc or made the world a more colourful place.
它们当中有的已经存在亿万年，或者造成环境的大破坏，或者让世界变得更加丰富多彩。
Some have saved billions of lives, wreaked environmental havoc or made the world a more colorful place.
恶魔们是否依然占有着原萃，又是否他们早已将它们挥霍殆尽，亿万年来无从了解与回答。
Whether the fiends still possess quintessence or whether they've used it up long since, it's not been seen or spoken of for many aeons.
当然，我们已经这么做了亿万年的时间，但是官方承认我们的存在也是我们计划的一部分。
Of course we have been doing so for eons of time, but official recognition of our presence is important to our plan.
与鲸鱼尸体构成的生态系统类似的物种可能依靠着亿万年来死去的海洋爬行动物的尸体生存。
Species similar to those at whale falls may have depended on dead Marine reptiles for hundreds of millions of years.
不管你信不信，没有你这个世界已经顺利的运转亿万年了，而且你消失之后还将依然如此。
Believe it or not, the world has got along fine without you for millions of year, and will do so long after you are gone.
不过，小脑扁桃体和中脑导水管周围灰质是大脑的两个古老原始的区域，可以追溯到亿万年前。
But the amygdala and the periaqueductal gray are ancient parts of the brain, dating back hundreds of millions of years.
不过，小脑扁桃体和中脑导水管周围灰质是大脑的两个古老原始的区域，可以追溯到亿万年前。
But the amygdala and the periaqueductal gray are ancient parts of the brain, dating back hundreds of millions of years.
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