Saw much heavy pack ice and a great number of large icebergs, also field ice.

发现大量重冰 许多大冰山和大冰。

They are permanent floating sheets of frozen freshwater.

它们是永久的淡水冰。

All these bits of glacier that have just fallen off from up there.

这些是从冰川上掉来的冰。

Rescuers and locals tried to free them by pushing ice blocks from their path.

当地居民和救援人员帮助移除冰。

Well, let's consider a world without floating ice.

好，设想有冰的世界吧。

Naughten looked at melting, floating areas of ice that hold back glaciers.

诺顿研究了阻碍冰川融化的冰区域。

A few kilometers away, we see the first ice blows.

在几公里之外，我们看到了第批冰。

But what if you apply this to glaciers and floating sea ice?

但是如果这发生在冰河以及冰的时候呢？

These narwhals have spent the winter further south on the edge of the pack ice.

这些角鲸在南方的冰区的边缘度过冬季的。

The polar bear has kept up with the retreating ice pack so far.

眼，冰群退到哪里，北极熊就跟到哪里。

They have spent the winter along the edge of pack ice in the northwest Atlantic.

它们在大西西北部的冰群边沿度过冬天。

And as it breaks apart, it triggers an annual summer migration.

待到冰融化之时，年度的夏季迁徙就开始了。

I was drifting on a piece of broken ice when, dear captain, you found me.

当我倒在块冰上随处漂流时，你找到了我，我的好舰长。

It is located on a shifting pack of ice so a permanent structure is impossible to build.

它寄身于块冰之上，因此不可能建造座永久性建筑。

My ship was exploring the Arctic when we found a man on a piece of floating ice.

我的船只在考查北极时，发现个男人躺在块冰上。

The Arctic predator needs sea ice to move around and find spots where they can catch prey.

这种北极捕食者需要根据上的冰四处流动来确定狩猎地点。

The sharp reduction in Arctic ice is not something scientists expected would happen at today's temperatures.

北京冰的急剧减少，科家认为在现在这种温度，不会发生。

During the winter, they stay in a smaller area and live among the shifting ice and cracks.

在整个冬季，则在较小的区域活动，且生活在冰还有裂缝之间。

Or maybe you feel a bit sad, imagining a polar bear floating away on a melting ice floe.

或者你会感到丝难过，想象到只在块正在融化的冰上逐渐漂远的的北极熊。

Polar bears, which hunt for seals along the ice's edge, and walruses, which fish there, will both be hard-hit.

沿着冰边缘狩猎豹的北极熊，以及在此捕鱼的象，都将受到沉重打击。