we hunted in groups. 我们集体狩猎
...roaming in huge numbers. 四处游荡 数量庞大
In the absence of competitors, 没有了竞争对手
allowing life to flourish in every corner of the world... 使生命得以在世界每个角落繁荣发展
The end of the Ice Age ushered in not only a time of plenty... 冰河时代的结束 不仅带来了丰盛的食物
to breed in these rich waters. 来到这片富饶的水域繁殖
is one of the largest wetlands in the world. 是世界上最大的湿地之一
are created in a matter of hours. 仅数小时便化为现实
In just ten hours, 仅仅十小时
In an instant, 一瞬间