As winter approaches in Alaska,
阿拉斯加逐渐进入冬季
food gets progressively harder to find.
食物越来越难取得
To live here is to walk a tightrope.
在这里生活像在走钢索
Yet every year, this coast attracts North America's most impressive hunter.
但每年这片海岸 都吸引北美最强悍的猎人
A brown bear.
这是一只棕熊
Here they grow larger than anywhere in the world.
这里的棕熊体型 比世上其他地方都大
Other bears have also gathered at the edge of the surf.
其他的熊也在海岸聚集
They've come here to fatten up for the winter.
它们来这里为冬季储备脂肪
They're waiting for an event that happens just once a year.
它们正在等候一年一度的盛事
The salmon run.
那就是鲑鱼回流
Others will tackle the fish upriver, but here in the sea,
其他掠食动物会在河流上游捕鱼 但在海边
these bears have the first chance.
棕熊可以抢占先机