Ice Ages

During these bursts of Arctic fury it seems as if the ice ages have once again returned, if only for several days or weeks.

只消数日，或数周的时间，北极狂飚的猖獗之势就会搅得天翻地覆，宛若冰河时代又卷土重来。

Hence, it is not the dust that causes mini ice-ages (or ice ages) on earth but the Sun's reversing magnetic field.

因此，它不小的灰尘，导致冰年龄（或年龄冰）在地球上，但太阳的磁场逆转。

These ice ages may have been the result of the expansion of land plants that followed the Cryogenian.

这些冰河时代的出现可能都是Cryogenian冰河其之后陆生植物扩张的结果。

I'll review the first two of these themes and leave the far more speculative discussions about the cause of the ice ages for another time.

我对前两个内容进行评述，以后有机会再对冰河期的起因进行猜测性的讨论。

An outsider's review of the astronomical theory of the climate: is the eccentricity-driven insolation the main driver of the ice ages?

一个旁观者对气候天文理论的评论：冰期的主要驱动器是不是离心率驱动的日射？

During the ice ages , human beings exposed to the colder temperatures of the time would often make their homes in caves.

在冰河时代，人们面临当时较为寒冷的气温，常常在洞穴里安家。

We have had warm periods and little ice ages; but the changes have been small.

我们有过暖期和小冰期；但是变化很小。

They knew that every so often during past ice ages, drops in sea level created a land bridge across the strait.

在最后一个冰期期间，他们了解到海平面的下降偶尔会产生横跨海峡的陆桥。

Various human species, including our own Homo sapiens, have endured ice ages and warming periods as well as floods and droughts.

各种人类物种，包括我们自己的智人，经受了冰河时代，变暖时期以及洪水和干旱。

It records the annual rise and fall of greenhouse gases and temperatures going back before the onset of the last ice ages.

它记录了从冰河时代开始至今每年温室气体和温度的增长和下降。

Ice ages come in slowly, but go out with a bang.

冰河时代来的很慢，但却走的很快。

Planet X makes sense, intuitively, as the reason for pole shifts, for crust shifts, for the Ice Ages and wandering poles.

行星X从直觉上就讲得通了，因为它是极移，即地壳移位的原因，也是冰河时期和地极动荡的原因。

Given the number of ice ages over the past 20m years, anantifreeze gene would be of great advantage.

考虑到过去2000万年来出现冰河世纪的次数，拥有抗冻基因将会是一个巨大的优势。

So evenduring the ice ages, life continued to thrive on lake floors and in thedeep ocean.

因此，即使在冰河期，湖面和深海的生命体也得以延续。

The ice sheets that cover Greenland and Antarctica now are remnants of this and previous ice ages.

现在覆盖着格陵兰和南极的冰盖就是上述冰块和以前几次冰期的遗留物。

They analyze hundreds of such layers, including some from the coldest periods of earth history, the Ice Ages.

他们已经分析了成百种这样的分层，包括在地球的历史中最寒冷的时代---冰河时代。

They analysed hundreds of such layers, including some from the coldest periods of earth's history--the Ice Ages.

他们研究了成百个这样的沉淀物层，包括一些来自地球历史上最冷时期--冰河时期的。

Much of what is known about recent ice ages comes from drilling into the ice at the planet's poles .

人们对近期冰川季的已有认识，大部分都得益于对地球极点冰层的钻探。

OVER THE PAST few million years the earth's climate has swung repeatedly between ice ages and warm interglacial periods.

过去数百万年来，地球气候在冰期与温暖的间冰期之间反覆摆荡。

This reflected the low sea levels resulting from successive ice ages, according to Chris Stringer, a Natural History Museum palaeontologist.

自然历史博物馆古生物学家克里斯-斯特林格（ChrisStringer）称，这反映出接连不断的冰川期导致海平面很低。