" And try not to meet any polar bears."

“尽量不要碰上北极熊。”

Yeah, polar bears OK, have you ever seen a polar bear?

对，北极熊。你见到过吗？

On the northern edges of Europe, you may even see a polar bear!

在欧洲的北部边缘，你甚至可以看到一只北极熊！

On the Norwegian island chain of Svalbard, there are more polar bears than people.

在挪威的斯瓦尔巴德群岛，北极熊的数量比当地人口还多。

Some people talk about fish or something like that, and it attracts the polar bear.

有些人说鱼或类似的东西，这吸引了北极熊。

And that is increasingly leading some polar bears to look for food where people live.

这使得越来越多的一些北极熊到人们居住的地方寻找食物。

However, up to 80 percent of the world's polar bears live in one country —Canada.

然而，世界上超过八成的北极熊都生活在一个国家——加拿大。

We have a polar bear named Freddie.

我们有一只名叫弗雷迪的北极熊。

Have you ever seen a polar bear?

你见过北极熊吗？

Luckily, non-lethal tools are available and more are being developed, particularly in Canada, which is home to two thirds of the world's polar bears.

幸运的是，非致命工具是可以获取的，也正在开发更多的工具，尤其是在加拿大，那里是世界上三分之二的北极熊的家。

I'm going to be a polar bear.

我要当北极熊。

I become a polar bear so I have to move up to the North Pole.

我变成了一只北极熊，所以我要搬到北极去。

But you've got 15% thinking it's going to be the loris and 9% thinking the polar bear.

但是有 15% 的人认为是懒猴， 9% 的人认为是北极熊。

Oceans are hotter and the ice cap is smaller so polar bears are losing their habitat.

海洋越来越热，冰盖越来越小，因此北极熊正在失去栖息地。

And this bias might explain why we overestimate the size of predators — so, why you were predisposed to thinking a polar bear is bigger than a walrus.

这种偏见可能解释了为什么我们高估了食肉动物的体型，这也是为什么你倾向于认为北极熊比海象大。

If we did nothing to change our current path, we could lose most of the world's polar bears by the end of the century due to habitat loss.

如果我们不做点什么来改变当下的状况，在本世纪末，由于栖息地的丧失，我们可能会失去世界上大部分的北极熊。

To make a profit, the argument goes, a polar bear weighing 320kg (700lb, the average for an adult) must, if hunting a 2kg goose, make its kill in less than 12 seconds.

如果一只重320Kg的北极熊（成年的北极熊平均重700磅）要从雪雁上获得能量，譬如要捕食一只2Kg的雪雁，则捕杀时间要低于12s。

Several score of the best-educated, most agreeable, and personally the most sociable people in America united in Cambridge to make a social desert that would have starved a polar bear.

在美国，几十位受过最好教育、最随和、个人也最善于交际的人联合起来， 在剑桥打造了一片会让北极熊饿死的社交沙漠。

To illustrate the effects of melting sea ice, Mr Goodall faces down polar bears in the Canadian Arctic and crosses a treacherous passage on the way from Chile to Antarctica by boat.

为了说明海冰融化的影响，古道尔先生在加拿大北极地区直面北极熊， 并在从智利乘船前往南极洲的途中穿越了一条危险的通道。