that the warmer tunnel air kept ice-free.

that's what makes it so difficult to predict exactly how rapidly we might see the arctic go ice-free.

这就是为什么我们很难准确预测最早什么时候能看到无冰的北极。

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jay zwally, a nasa scientist, recently suggested it could be virtually ice-free by late summer 2012.

最近，美国航空航天局科学家杰·齐瓦利提出，可能在2012年夏末之前，实际上就没有海冰了。

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we would set the planet on a course to the ice-free state, with sea level 75 metres higher.

地球上没有冰，海平面比现在的高出75米。

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ice-free sea absorbs more heat and accelerates global warming.

没有冰山的海洋将会吸收更多热量，并加速全球暖化。

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however, an ice-free arctic would also make the region more accessible to oil and gas exploration and shipping.

然而，另一方面，对于原油天然气探勘及航运事业而言，没了冰山挡路，要进入北极圈将会变得容易得多。

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the ice-free huangpu river is the main waterway in the shanghai area.

常年不结冰的黄浦江是上海主要的水路通道。

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the norwegian port of tromso and the russian port city of murmansk are ice-free year round even though they are in the arctic.

挪威的特罗姆瑟港口和俄罗斯的摩尔曼斯克港口城市常年都不会结冰，即使它们位于北极也是如此。

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the earth has ranged from a frigid snowball to a completely ice free planet.

地球范围从冷雪球，以一个完全免费冰星球。

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the wide bay could be a harbour, giving russia for the first time access to an ice-free sea.

那宽阔海湾可以成为海港，首次给俄国提供一条通向不冻海的航道。

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we would set the planet on a course to the ice-free state, with a sea level 75 meters higher.

我们将使地球踏上无冰状态的漫漫征程，海平面将升高75米。

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the city and the areas around it are an ice-free port and a nuclear-weapon-free zone.

那城市及其周围的地方是不冻港和无核区。

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manufactured goods from asia keep flowing into this natural ice-free harbors throughout the year.

整年都有来自亚洲的制成品源源不断的输送到这个天然不冻海港。

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the report also finds that the arctic ocean could become nearly ice-free in the summers within the next 30 to 40 years.

该报告还认为，北冰洋可能成为在未来30至40年近冰在夏季自由。

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in both images, gray indicates land, dark blue indicates ice-free ocean water, and white indicates ice concentrations.

在图中，灰色部分代表陆地，深蓝色部分代表没有结冰的海洋水域，而白色部分则表示结冰的程度。

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if the earth continues to warm, the arctic ocean may be ice-free during the summer, allowing life there to flourish, scientists say.

科学家们说，如果地球持续变暖，北冰洋可能在夏天的时候没有冰，使得那里的生命繁茂起来。

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the corresponding map in the atlas itself indicated that significant portions of greenland's coastline had become ice-free.

相应地图集里的地图也表明，格陵兰岛绝大部分的海岸线都已经成为不冻区。

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the report forecasts that the arctic ocean, within three or four decades, will likely become nearly ice free during the summer months.

这项报告预测北极海洋在30或40年间有可能会在夏季的那几个月里变成没有冰层覆盖的海面。

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they predict arctic waters could be ice-free in summers, perhaps by 2013, decades earlier than they thought only a few years ago.

他们推测2013年以后，北极水域夏季将完全解冻，这比他们几年前预测的时间早了数十年。

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a warming arctic will not, in other words, be full of fish. it will simply be an ice-free version of the desert it already is.

换言之，升温后的北极地区不会摇身变为天然渔场。北极地区仍旧只是一片荒漠，无非是少了冰原而已。

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few now disagree that, at some point this century, the arctic will start to see ice-free summers.

很少有人会反对，本世纪的某一时间，北冰洋将存在完全无冰的夏季。

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