有一天，月亮姐姐与安娜来到了北极。
换言之，北极就是一片海洋。
一只北极狐的重量是多少？
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.
金刚石般的意志，如北极星一般指引着。
协议的顺利达成有一个必要条件：北极海冰的进一步减少。
One requirement for the success of this deal: a further retreat of Arctic sea ice.
位于北极圈北部的这个煤矿小镇创建时是一个劳改场所。
This coal-mining town, north of the Arctic Circle, was founded as a labor camp.
我们甚至可能突然看到一只北极熊在冰面上。
到现在，北极熊一直是针对气候变化问题宣传画的宠物。
Up to now, the polar bear has been the poster child for climate change.
我相信自己能听到，有一头重达1 500磅的雄性北极熊正朝我走来。
I had convinced myself that I could hear a male 1, 500-pounder heading my way.
他现在是北极星风险投资公司的一般合伙人。
Today he's a general partner at the VC firm Polaris Ventures.
很多北极熊在一场大风暴后出现在这里。
我们很有理由这么问：为什么北极熊一直在海里游啊游？
The question might reasonably be asked: Why did the bear keep swimming?
是什么引发了人们对北极地区的新一轮的兴趣？
磁北极就是另一回事了。
孩子们竟能和北极熊在同一个泳池里面对面！
The children and the polar bear are face to face in the same swimming pool!
另外一个观点认为，地球会上下颠倒，北极会变成南极。
Another idea is that the earth will turn upside down.So the North Pole will become the South Pole.
另外一个观点认为，地球会上下颠倒，北极会变成南极。
Another idea is that the earth will turn upside down. So the North Pole will become the South Pole.
第一次看到北极光是一件惊奇的事。
Seeing the northern lights for the first time is a thing of wonder.
当时，这名测量员正准备返回自己的车，忽然看到不远处有一头北极熊。
The surveyor was returning to his car, when he saw the beast.
从前，有一只北极熊。
可是我像北极星一样坚定。
北极冰的融化速度加快只是气温变化的一种后果；
The rate of melting in the Arctic isn't just a function of temperature change;
这一时期315只北极熊全部存活了下来。
这具尸体发现于北极圈内一座偏远的岛屿上。
这具尸体发现于北极圈内一座偏远的岛屿上。
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