然而，兰皮诺和其他人对传统主义者的一个基本假设提出了质疑：在整个地球历史中，冰川期是周期性发生的。
Yet Rampino and others question one of the traditionalists' basic assumption: the periodic occurrence of glaciation throughout Earth's history.
因此，化石是识别地球历史上特定时期的标志。
Fossils are thus identifying markers for particular periods in Earth's history.
信不信由你，这还不是地球历史上最严重的灾难。
Believe it or not, this wasn't the worst catastrophe in our planet's history.
如果地球的轨道比现在小5%，那么地球历史早期的温度就足以使海洋蒸发。
If Earth's orbit were only 5 percent smaller than it is, temperatures during the early stages of Earth's history would have been high enough to vaporize the oceans.
大约2.5亿年前，在地球历史上最严重的一系列大灭绝中，几乎所有的生命物种都消失了。
Roughly 250 million years ago, in the worst series of mass extinction in Earth's history, almost all species of life simply vanished.
地球历史上的这次重大灾难以物种的大量消亡为标志；当时，地球上多达一半的物种都灭绝了。
This break in Earth's history is marked by a mass extinction, when as many as half the species on the planet became extinct.
地质学是研究地球历史的科学。
从地球历史的节律角度讨论岩浆活动旋回。
This paper deals with magmatic activities cycles as viewed from the rhythm of the Earth's history.
地球历史包含许多没有全新世稳定和温和的时期。
The planet's history contains many less stable and clement eras than the Holocene.
当然，人类正在引发地球历史上第6次物种大灭绝。
Of course, humanity is currently setting off the sixth mass extinction event in Earth's history.
这是全球海洋碳循环重要的替代部分，其重要性贯穿地球历史，而且依然存在。
This is a crucial but understudied compartment of the global Marine carbon cycle, which has been of key importance throughout Earth history and it is still at present.
所有这些发现为科学家们提供了关于宏观地球历史以及微观大峡谷地貌的信息。
All of these discoveries provide scientists with information both on the earth's history in general and on the area ground of the Grand Canyon in particular.
开元时期，在地球历史上的遥远过去，人类和动物原本是同居一起，非常友好与和平。
In the beginning, in a far distant past of Earth history, humans and animals used to cohabit very lovingly and peacefully.
由月亮引起的潮汐把这些都调成了地球历史上起决定性作用的鸡尾酒——地球原生汤。
And the tides created by the moon churned these into the most crucial cocktail in the history of the earth-the 14 Primordial Soup.
2005年早些时候曾有人预计，去年将是有观测记录以来地球历史上最暖的一个年头。
Predictions early in 2005 that the year would be the warmest on record turned out to be off the mark.
看看过去50年的地球历史，你会发现一个渐进的人类治愈——某种聚合而不是撕裂。
Look at the planet historically over the last 50 years and you will see a gradual healing of humanity - a putting together, not a tearing apart.
对我们自己而言，我们已不再了解地表地球历史，直到最近一次经历把我们跟你们的旅程取得联系为止。
For ourselves we have existed outside of the historical understanding of the outer earth up until a recent experience put us into contact with your journey.
化石研究人员已经发现的古海洋生态系统残骸，是出现在迄今为止，地球历史上最为严重的一次生物灭绝中。
Fossil hunters have uncovered the remains of an ancient Marine ecosystem that arose in the aftermath of the most devastating mass extinction in Earth's history.
地球历史上有很多尚未揭示的奥秘，例如距今约350 ~ 250万年前的全新世中期地球气候变化的根本原因一直都是个谜。
09051903 One of the mysteries of the Earth's history is the fundamental climate change in the Mid Pliocene, about 3.5-2.5 million years ago.
我们已经询问了你们Agarthan的同胞，准备好一个综合的关于这四个法则的概述，以及他们的地球历史，好让你们能够更加简便的了解它们对于你们的重要性。
We have asked your Agarthan Cousins to prepare a comprehensive overview of these four laws and their earthly hi story so that you can more easily understand their significance to you.
Andean - Saharan冰河期横跨了Ordovician冰河期的后期和Silurian冰河期的前期，大灭绝成为了其标志性事件，那是地球历史上第二个气候最恶劣的时期。
Straddling the late Ordovician period and the early Silurian period, the Andean-Saharan ice age was marked by a mass extinction, the second most severe in Earth's history.
杨说，冰川作用在地球的整个发展历史中都有发生，有证据表明它发生在二叠纪末期。
Glaciation, Young claims, has occurred throughout Earth's history, and there is evidence that it occurred toward the end off the Permian period.
靠近地球的9号探测器和其他俄罗斯着陆器所看到的岩石图，暗示了一段痛苦的火山历史，这一点在上世纪90年代初得到了美国麦哲伦轨道飞行器的证实。
The rocky views glimpsed by the Nearer Nine and other Russian landers suggested a tortured volcanic history that was confirmed in the early 1990s by the American Magellan orbiter.
这种金属核赋予地球特有的磁场，在地球的历史上发挥了极其重要的作用。
This metallic core gives Earth its characteristic magnetic field, which has played an extremely important role in the history of our planet.
最近对北大西洋深海沉积物的研究揭示了地球气候历史上可能的循环模式。
Recent studies of sediment in the North Atlantic's deep waters reveal possible cyclical patterns in the history of Earth's climate.
当前我们对太阳光度的认知是：在地球的历史进程上，太阳光度应该是逐渐增加而不是减少的。
Our present understanding of the Sun's luminosity holds that it should have progressively increased, not decreased, over the course of Earth's history.
当前我们对太阳光度的认知是：在地球的历史进程上，太阳光度应该是逐渐增加而不是减少的。
Our present understanding of the Sun's luminosity holds that it should have progressively increased, not decreased, over the course of Earth's history.
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