- Battles between the mammals have always driven their evolution,
哺乳动物之间的战斗 始终推动着它们的进化 - and they don't just happen in the grasslands.
这不仅仅发生在草原上 - Fifty million years ago,
5000万年前 - what are now India and Asia collided on an epic scale.
如今的印度和亚洲 以极大的规模碰撞在一起 - The crash forced the land into the sky,
将陆地推向天空 - creating the towering Himalayas.
形成了高耸的喜马拉雅山脉 - Today, they are 2,500 kilometers long,
如今该山脉长2500公里