and become the world's most dangerous predator. 成为世界上最危险的捕食者
to feed many over the winter months. 让集体有足够的食物度过数月的冬天
Their ultimate prize isn't the death of one, 他们最终的目标不是杀死一只
Only then do they close in behind the herd. 这时他们才从背后接近野牛群
hunters corralled the bison for miles, 猎手们将野牛驱赶数公里
The evolution of our large, complex brains 巨大而复杂的脑部的进化
...for the Ice Age saw the spread of a new predator. 冰河时代见证了新捕食者的扩张