Life here is dangerous in the extreme. 这里的生活险象环生
and reveal the extreme lengths animals go to to survive. 去揭秘动物们为了生存 突破的种种极限
It seems extreme, but this is the reason why. 这看上去有些极端,不过不是没有道理的
At the northern extreme of our planet, 而在地球的北极
At the southernmost extreme of our planet, 南极洲位于地球的最南边
Nowhere else on Earth is seasonal change so extreme. 两极地区的季节变化非常极端
Few animals can survive these extreme changes. 只有少许动物能适应 这种极端的气候变化
because of their ability to survive in such extreme conditions. 因为它们能在这种极端环境中生存
The work may be hazardous in the extreme, 这项工作看起来极度危险