对北极的观察显示，每个夏天北冰洋上面覆盖的冰川都比前一个夏天的要少。
Observations of the Arctic reveal that the Arctic Ocean is covered by less ice each summer than the previous summer.
北极燕鸥在从南美洲的最南端飞往北极圈的路线全长2万公里，但燕鸥这一路上都不会留意观鸟船送来的散发臭味却又可口的鲱鱼。
An arctic tern, on its 20,000 km flight from the extreme south of South America to the Arctic circle, will take no notice of a nice smelly herring offered from a bird-watcher's boat along the way.
北极星似乎由一颗脉动的恒星衍变而来。
The Pole Star appears to be changing from a star that pulsates.
有一天，月亮姐姐与安娜来到了北极。
在一些水域，比如北极，气候变暖会使浮游植物生长成熟，而这些区域会变得更绿。
In some waters, such as those of the Arctic, a warming will make conditions riper for phytoplankton, and these areas will turn greener.
仪式权杖柄是用一种小型的北极独角鲸的牙齿制成的。门柄是用海象的牙齿制成的。
The shaft of the ceremonial mace is the whorled tusk of a narwhal, a small Arctic whale. The door handles are of walrus tusk.
一些科学家提出了向北极平流层释放气溶胶喷剂的概念。
The concept of releasing aerosol sprays into the stratosphere above the Arctic has been proposed by several scientists.
从孩提时代起，Shirase 就梦想成为像阿蒙森一样的极地探险家，而他最初的目标是去北极。
Since boyhood, Shirase had dreamed of becoming a polar explorer like Amundsen, and he initially set his sights on the North Pole.
换言之，北极就是一片海洋。
海龟、北极熊和大熊猫只是世界上成千上万濒临灭绝的动物中的一部分。
Sea turtles, polar bears and giant pandas are just some of the thousands of animals in this world that are at risk of extinction.
在北极圈以北的德文岛上大约有一万对鸟在那里筑巢，它们被称为管鼻鹱，是一种北极海鸟。
Some 10,000 pairs of the birds, called fulmars, a kind of Arctic seabird, make their nests on Devon Island, north of the Arctic Circle.
一个猎人从北极捕获了一只疑似北极熊幼崽的动物，目前已被发现，他将面临严厉的惩罚。
A hunter who took what appeared to be a baby polar bear from the North Pole has been found and will face strict punishment.
在《薄冰之上》一书中，作家兼插画家理查·埃利斯描绘了北极图标，北极熊的自然史。
In ''On Thin Ice'', Richard Ellis, a writer and illustrator, paints a natural history of the icon of the north, the polar bear.
加拿大的北极是一个广阔的、没有树木的极地沙漠，一年中大部分时间都被雪覆盖着。
The Canadian Arctic is a vast, treeless polar desert that's covered with snow for most of the year.
大约一千年前，一个对北极环境有独特适应力的群体出现了。
Around a thousand years ago, one group emerged that was uniquely well adapted to cope with the Arctic environment.
这是令人担忧的，因为北极气温上升和海冰迅速消失正在形成一种新型的气候反馈回路，可能会加速北极变暖。
This is troubling as climbing arctic temperatures combined with rapid sea ice loss are creating a new type of climate feedback loop which could accelerate Arctic warming.
和棕熊和北极熊一样，树懒熊可能是在树木稀少的环境中进化而来的。
Like brown bears and polar bears, sloth bears may have evolved in an environment with few trees.
她站在阳台上，像北极光一样闪闪发光。
She stood on the balcony and shone as the Aurora Borealis shines.
一只北极狐的重量是多少？
这是灌木能在北极生存的原因之一。
That's one of the reasons that shrubs survive in the Arctic.
这一警报是由北极地区史无前例的事件所引发的。
海伦四十岁的时候有一个梦想：要独自走到北极。
Helen had a dream to walk to the North Pole alone when she was forty.
上周，科学家们警告说，世界上三分之一的北极熊可能会在未来40年里消失。
Last week the scientists warned that a third of the world's polar bears could disappear in the next 40 years.
陆上食物是非常有限的，根本没有什么能与一只海豹所能给北极熊提供脂肪和能量相比。
Food onshore is very limited and there is simply nothing comparable to a seal that provides a polar bear with fat and energy.
剑桥科学家彼得·沃德姆斯自1971年以来一直在测量和监测北极，他说这种减少是不可逆转的。
Cambridge scientist Peter Wadhams, who's been measuring and monitoring the Arctic since 1971, says the decline is irreversible.
但其中一些工程特别关注对两极融化的阻止，尤其是北极。
But some projects look specifically at reversing the melting at the poles, particularly the Arctic.
由北极气候变化造成的威胁是加拿大因纽特人面临的问题之一。
The threat posed by climate change in the Arctic is one of the problems faced by Canada's Inuit people.
无论是在动画片中北极熊的手里，还是在圣诞老人的手里，几乎所有可口可乐的广告里都有一样东西：标志性的玻璃瓶。
Whether it's in the hands of animated polar bears or Santa Claus, there's one thing you'll find in nearly all ads for Coca-Cola: the characteristic glass bottle.
北极燕鸥之所以能不受这一分神因素影响，是因为那时它被一种本能感觉所驱动着，这种本能令人类十分钦佩，它叫做：“更远大的目标”。
The arctic tern resists distraction because it is driven at that moment by an instinctive sense of something we humans find admirable: larger purpose.
一些科学家怀疑传统知识的价值，因为北极人所拥有的传统知识追溯起来并不足够悠久。
Some scientists doubt the value of traditional knowledge because the occupation of the Arctic doesn't go back far enough.
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