Geologists measure time in eons, eras, periods, epochs and ages, with eons being the longest.

质学家用宙、代、纪、世和期来衡量时间，宙是最长的。

Eons later, the comet crashed into a planet in another solar system.

亿万年后，这颗彗星跟另外一个太阳系上的行星相撞。

Over the eons of our evolutionary changes, our diet became very varied.

经过亿万年的进化变化，我们的饮食变得非常多样化。

By the time dinosaurs jumped on the feather bandwagon, they were so last eon!

等到恐龙进化出羽毛的时候，它们其实已经很落后了！

Over the eons, nature has stumbled on many different ways of desquishifying organisms.

亿万年来，大自然偶然发现了许多不同的生物脱水方法。

The craters in the highlands are from countless impacts over the eons from asteroids and comets.

陆上的陨石坑是由无数的小行星和彗星撞击而形成的。

Species have been accidentally hitchhiking their way around the planet for eons, well before humans got involved.

早在人类涉足球之前，物种就已经在球上偶然搭便车了。

For millions of years, the Gunnison River has been carving this canyon at work across eons of isolation.

几百万年来，甘尼森河静静流过孤独的黑峡谷。

Over the eons, this has cleaned out a lot of otherwise dangerous objects that could have eventually hit Earth.

长久以来，这清理了许多原本能会撞击球的危险物体。

There was certainly life before that, but didn't leave evidence we can find so many eons later.

在那之前肯定有生命存在，但没有留这么多世纪后的我们发现的证据。

The pictures it returned were breathtaking, and revealed a world that has seen a lot of pummeling over the eons.

它传回来的照片令人叹为观止——展示了一个千万年来伤痕累累的世界。

But in those deep craters it can persist, accumulating over the eons.

但在那些陨石坑深处水就得以被保存，并在亿万年中不断积累。

Apparently, Mars suffered a tremendous impact from an object hundreds of kilometers across eons ago.

显然，火星在亿万年以前曾被一个宽达上百公里的物体撞击。

Apparently, star formation in ellipticals came and went eons ago.

显然，椭圆星系中恒星的形成活动在很久以前就开始了。

And those changes have been affected by eons of ideas.

这些变化受到了亿万年思想的影响。

In many places, those glaciers seem to have scraped away eons of rock.

在许多方，这些冰川似乎刮走了数亿年的岩石。

And scientists have studied them for eons.

科学家们已经对它们进行了亿万年的研究。

An estimated four billion species emerged on our planet in past eons.

据估计，有40亿种物种在过去的时代出现在我们的星球上。

As eons pass, the nuclei in the frozen black  dwarf slowly combine.

随着时间的流逝，冻结的黑矮星中的核子逐渐结。

They’re a motley crew, independently evolving similar mouthparts at least four times over the eons.

他们是一群杂牌军，在漫长的岁里至少独立演化出了四次相似的口器。