The other bright region in the image is the polar ice cap over the Arctic Ocean.
图中另一块明亮的区域则是北冰洋的极地冰冠。
The extent of the ice cap varies seasonally, and in September 2007 it reached its smallest recorded size.
冰盖的范围依季节变化，2007年9月到达有记录的最小面积。
The Arctic ice cap fluctuates with the seasons, growing in the freezing winter and shrinking over the summer.
北极冰盖随季节而变化，在严寒的冬季增长而在夏季则会减少。
The retreat of the polar ice cap is making the region easier to work in, and there is thought to be lots of oil and gas to tap.
北极冰盖的消融使得在该地区作业较为容易，而且该地区储藏有大量可开发的石油和天然气。
The melting ice cap looks almost certain to create a navigable Northwest Passage and unleash a scramble for undersea resources.
随着冰盖的消融，“打开”一条可航行的西北航线看似已成定局，对海底资源的争夺也一触即发。
The ice cap is 40% thinner than 40 years ago.
冰川厚度比40年前薄了四成。
In some places the ice cap reaches a depth of five kilometers.
在一些地方，冰帽达到五公里厚。
Didn't you see the entire North Polar ice cap melting before your eyes?
你们难道没有看到整个北极冰盖在你们眼前融化吗？
The difficult journey was worth it when they reached the ice cap and saw the view.
他们一路艰难跋涉，但当他们爬上冰帽，看到美景时，发觉这一切都是值得的。
The ice cap — up to three kilometers thick — covers an area 14 times the size of England.
可以厚达3公里的冰帽覆盖的面积相当于英国国土面积的14倍。
The northern ice cap on Mars is nearly divided into two by a huge division named Chasma Boreale.
火星北半球的冰冠几乎被宏伟的博勒拉峡谷一劈为二。
With the ice cap covering most of the island, the west coastal area is the only place habitable.
由于岛上绝大部分地区被冰盖覆盖，所以，西部沿海地区成了唯一可供人居住的地方。
Since 1979, the size of the summer polar ice cap has shrunk more than 20 percent. (Illustration from NASA)
自1979年以来，夏天极地冰冠缩小的规模达20%以上。（插图由美国航天局提供）
The ice cap on Uganda's highest peak has split because of global warming, Uganda's Wildlife Authority (UWA) says.
乌干达野生动物保护局称，因为全球变暖，其国内最高峰的冰盖已经破裂。
In this frigid2 Arctic environment, approximately 85 percent of the island's surface is covered by a permanent ice cap.
在严寒的北极环境中，格陵兰岛约85%的表面都被永久冰层所覆盖。
The retreat of the polar ice cap is making the region easier to work in, and there is thought to be lots of oil and gas to tap.
北极冰盖的消融使得该区域更容易进入，人们认为那儿蕴藏着丰富的石油和天然气。
At high pressures such as under an ice cap, they reckon that rocks cannot expand to turn into liquid magma even if they are hot enough.
他们认为在冰帽的强大压力下，即使温度很高，岩石也不可能成为液体熔岩。
Today, global warming is melting the ice cap so fast that scientists expect the Passage to become a reliable summer shipping route within a few decades.
今天，全球变暖正在快速融化冰盖，使得科学家们预期该通道会在几十年内成为一条可靠的夏季货运路线。
But when last measured in 2005 by China's state bureau of surveying and mapping its rock height was calculated at 8844.43m (29017ft) plus a 3.55m ice cap.
最近一次测量由中国国家测绘局于2005年完成，测得珠峰岩石顶高度为8844.43米，上面还有3.55米的冰盖。
The ice cap could be thinner and still protect water if it were topped with a layer of frozen atmospheric gas, such as dry ice, which is solid carbon dioxide.
若冰层上方还存在一层固态气体层，如干冰——二氧化碳的固态形式，维持液态水存在的冰层厚度要求就能相对降低。
Little has been said in the media about climate change and health - usually what we hear about is polar bears, loss of the ice cap, dying species and flood risks.
媒体总是把注意力放在北极熊、冰盖融化、濒危物种和洪水的危险上，极少提及气候变化对人类健康的影响。
In 2007, a Russian expedition descended in a pair of vessels more than two miles under the ice cap and deposited a Russian flag on the seabed at the North Pole.
2007年，一支俄罗斯探险队在北极用两艘潜水器潜到了两英里之下的冰层，并在海底放置了俄罗斯国旗。
Much has been made about conflicts between Arctic states because of a retreating polar ice cap, which will make many natural resources accessible for the first time.
极地冰冠后退在环北极国家中引发了热议。 随着冰冠消融，下面蕴藏的丰富自然资源将首次浮出水面。
Vast new deposits of minerals and gems are being discovered as Greenland's massive ice cap recedes, forming the basis of a potentially lucrative mining industry.
随着格陵兰岛广袤的冰盖逐渐消融，人们发现了储量丰富的新矿产和宝石，这为潜在利润巨大的采矿业奠定了基础。
He is expected to warn ministers in polar regions that the arctic ice cap may totally disappear in as little as five years if nothing is done to curb greenhouse emissions.
他会警告负责极区的部长，如果再不下措施抑制温室气体的排放，则北极的冰帽将在五年内完全消失。
This lava field just north of the Mýrdalsjökull ice cap serves as one of many monitoring sites to track ground deformation that could serve as a signal of an impending eruption of Katla.
这片位于米达尔斯冰盖北部的熔岩原是用来追踪地面形变的监测点之一，这里地面的形变可以被视为卡特拉火山喷发的前兆。
This lava field just north of the Mýrdalsjökull ice cap serves as one of many monitoring sites to track ground deformation that could serve as a signal of an impending eruption of Katla.
这片位于米达尔斯冰盖北部的熔岩原是用来追踪地面形变的监测点之一，这里地面的形变可以被视为卡特拉火山喷发的前兆。
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