Earth's polar ice caps are in peril.

地极现在很危险。

Mars, like Earth, has polar ice caps.

和地球一样，火星也有极地冰盖。

The polar ice caps are melting.

极地冰帽正在融化。

" The polar ice caps are going to melt, " she wrote.

“极地冰盖即将融化，”她写道。

As the polar ice caps melt, ocean levels will rise.

随着极地冰层的融化，海平面将上升。

It has polar ice caps, and lots of rusty dust covering its surface.

它有极地冰帽和覆满表面的生锈的灰尘。

Huge solar mirrors are put in orbit round Mars to heat the polar ice caps.

巨大的太阳反射镜被射入火星的轨道来给两级冰冠热量。

Say goodbye to the white polar ice caps reflecting sunlight that would otherwise bake the planet.

永别了！那反射着阳光的雪白的极地冰帽，而阳光则烘烤着我们的星球。

Higher temperatures will cause the polar ice caps to melt to less than 50% of what they are today.

更高的温度将导致极地冰盖融化到今日的 50％ 以下。

Higher temperatures will cause polar ice caps to mell to less than 50% of what they are today.

高温会导致极地冰盖融化 50%。

The polar ice caps are the giant thick sheets of ice that cover the North and South poles.

极地冰盖是覆盖北极和南极的巨大的厚厚冰层。

In fact, as much as a third of the Martian atmosphere freezes out every winter to coat the polar ice caps!

实际上，每年冬天会有三分之一的火星大气冻成干冰，覆盖在极地冰盖上！

Researchers from the European Space Agency say it sits beneath the south polar ice cap and is about 20 kilometres wide.

欧洲航天局的研究人员称这些液体位于南极冰盖下方，大约有20千米宽。

When we think about global warming, we tend to fret about things we can see: plants, animals, the polar ice caps.

当我们想到气候变暖时，往往发愁的是我们能看到的事物：植物、动物和北极冰盖等。

Huge chunks of the polar ice caps are breaking off, accelerating the process even further and causing the sea level to rise.

大块的极地冰帽正在融化，极大地加速了这一过程，并使海平面不断上升。

At some point, the water inside you would have been inside dinosaurs, bacteria, the oceans, storm clouds, the polar ice caps and much more.

从某种程度上说，你体内的水可能曾经存在于恐龙、细菌、海洋、风暴云、极地冰盖等等其他更多物质里面。

At first glance, Mars seems familiar -- polar ice caps, large valleys, liquid water under its surface, and a day barely longer than Earth's.

乍一看，火星似乎令人眼熟——极地冰盖、大山谷、表面下的液态水及仅仅稍长于地球一天。

Three environmentalists died in the polar ice cap.

三个环境学家死在了极地冰冠。

For hundreds of millions of years, the planet had no polar ice caps.

数亿年来，地球上没有极地冰盖。

As our climate warms up, the polar ice caps will begin to melt.

【polar】随着地球气候逐渐变暖，极地的冰冠将开始融化。