The Canadian Arctic is a vast, treeless polar desert that's covered with snow for most of the year.
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。
A hunter who took what appeared to be a baby polar bear from the North Pole has been found and will face strict punishment.
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。
Eventually, Agassiz and others convinced geologists and the general public that a great continental glaciation had extended the polar ice caps far into regions that now enjoy temperate climates.
最后，阿加西和其他人说服了地质学家和普通大众，一个巨大的大陆冰川作用已经把极地冰帽延伸到了现在享受温带气候的地区。
In ''On Thin Ice'', Richard Ellis, a writer and illustrator, paints a natural history of the icon of the north, the polar bear.
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。
The polar vortex is a system of wintertime winds.
极地涡旋是冬季风形成的一个风系。
There was a period of excessive warmth which melted some of the polar ice.
有段时期温度过高，融化了极地的部分冰层。
Since boyhood, Shirase had dreamed of becoming a polar explorer like Amundsen, and he initially set his sights on the North Pole.
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。
Last week the scientists warned that a third of the world's polar bears could disappear in the next 40 years.
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。
Global warming has posed a serious threat to the survival of animals such as polar bears.
全球变暖对北极熊等动物的生存造成了严重威胁。
While a polar bear is sleeping on an ice berg with its paws clutched around, it is like a toddler holding their teddy bear. That is truly cute!
当北极熊抱着爪子睡在冰山上时，它就像一个蹒跚学步的孩子抱着他们的泰迪熊。那真的很可爱！
Food onshore is very limited and there is simply nothing comparable to a seal that provides a polar bear with fat and energy.
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。
The first published sketch, "A Dinner at Polar Walk" brought tears to Dickens's eyes when he discovered it in the pages of The Monthly Magazine, earned him a modest reputation.
狄更斯发表的第一部小品文《极地的晚餐》在《每月杂志》上刊登时，他泪流满面，这为他赢得了不少声誉。
As the ocean warms, a body of water called the Antarctic Polar Front—an upward movement of nutrient-rich sea that supports a huge abundance of marine life—is being pushed further south.
随着海洋变暖，一种被称为南极极锋的水体正被逐步推向南方；南极极锋是一种富含营养的海洋向上运动，它支持着大量海洋生物的生存。
As the ocean warms, a body of water called the Antarctic Polar Front—an upward movement of the nutrient-rich sea that supports a huge abundance of marine life—is being pushed further south.
随着海洋变暖，一个被称为南极极锋的水体——一个支持大量海洋生物生存的营养丰富的海水上升运动——正被进一步推向南方。
Scientists fly in a helicopter, over the places where polar bears live.
科学家们乘坐直升飞机，飞过北极熊的栖息地上空。
It is difficult to figure out a global population of polar bears as much of the range has been poorly studied.
由于大部分有关其生活范围的研究还很少，所以很难统计出全球北极能的数量。
As a result, many animals are dying out, such as penguins and polar bears.
因此，许多动物正在灭绝，比如企鹅和北极熊。
According to a study in Nature Climate Change, the number of most polar bears will fall rapidly by 2080.
据《自然气候变化》的一项研究显示，到2080年，几乎大多数北极熊的数量都将急剧减少。
Modern methods for tracking polar bear populations have been employed only since the mid-1980s, and are expensive to perform consistently over a large area.
跟踪北极能种群的现代方法仅在20世纪80年代中期才被采用，而且，要在大范围内连续采用这种方法，其代价非常高昂。
This image shows part of a polar crater that still holds on to some summer ice, as well as beautiful sand dunes sculpted by the wind.
这张照片展示了某个极地陨坑，陨坑中还保存着一些夏季冰的痕迹，在风的作用下形成了一些美丽的沙丘。
The island itself is kind of like a Scandinavian Wild West. Reindeer exist in abundance, and polar bears are a genuine threat.
小岛有点像斯堪的纳维亚粗狂的西部，生活着许多驯鹿而他们的唯一的危险就是北极熊。
Join a polar bear club or sing along with a busker in the streets and see what happens.
加入北极熊俱乐部或者跟着街头歌手一起卖唱看看会有什么事情发生。
If you can handle not living like a polar bear, try keeping your thermostat at 78 degrees.
如果你不想房间里冰冷冰冷的，像住在北极一样，可以把你的温度调节器调到78度（华氏摄氏度）。
So you can see that polar covalency is a tendency towards ionic bonding.
所以你看得出极性共价就是，趋向离子键的。
A polar bear returns to the whale carcass to feed at dusk.
北极熊在黄昏时返回鲸鱼尸体找食物。
I've got Cartesian points, I could create a polar points.
我已经有了一些笛卡尔坐标点了，我可以创建一个极坐标点。
“It has been purposely hobbled, ” says Rob Huebert, a polar specialist at Canada's Calgary University.
加拿大卡尔加里大学（Calgary University）的极地专家罗布·休伯特（RobHuebert）认为，“这本就是特意限制的”。
As a polar orbiting spacecraft, however, Metop sees Europe approximately only once a day.
然而，作为一个极地轨道航天器，Metop差不多只能每一天看一次欧洲。
Creative bookshelf shaped like a polar bear designed by ibride.
由ibride设计的北极熊造型创意书架。
I have a big one with polar bears in it.
我有一个大的球形玻璃器，里面有北极熊图案。
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