这些木雕和石雕都是他用火雕刻和标记的，用以说明数百万年来塑造我们星球的力量的暴烈程度和强度。
These are wood and stone sculptures that he's carved and marked with fire to illustrate the ferocity and intensity of the forces that have shaped our planet over millions of years.
数百万年来，它遂洋流勇动，漫无目的地漂荡。
For millions of years it drifted aimlessly with the currents.
数百万年来炎热的年轻恒星发出的辐射不断的侵蚀着这个星云。
Radiation from hot, young stars has slowly eroded the nebula over millions of years.
我们不能确定(难以避免的)气候变化的程度，因为我们讨论的是数百万年来仅见的大气二氧化碳含量。
We're uncertain about the magnitude of climate change, which is inevitable, because we're talking about reaching levels of carbon dioxide in the atmosphere not seen in millions of years.
这次撞击预计将掀起近350多吨的碎片，形成约10公里高的烟尘团，将这些尘土数百万年来首次曝露于阳光的直接照射之下。
The crash is expected to displace around 350 tonnes of debris, pushing a cloud up as high as 10km above the surface and casting the dust into direct sunlight for the first time in millions of years.
数十年来，许多地质学家认为，过去数百万年必定发生了一连串的个别喷发，才能造成广大的毕夏普凝灰岩。
For decades, many geologists assumed that a series of distinct eruptions over millions of years must have occurred to produce the extensive Bishop tuff.
毕竟，我们的祖先们花了数百万年打猎和采集为生，只有最后的几千年来作为栽培者。
After all, our ancestors spent millions of years hunting and gathering and only the last few thousand years as cultivators.
毕竟，我们的祖先们花了数百万年打猎和采集为生，只有最后的几千年来作为栽培者。
After all, our ancestors spent millions of years hunting and gathering and only the last few thousand years as cultivators.
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