Although rare, mass extinctions change the course of history like nothing else. 大规模灭绝虽然罕见 但会极大地改变历史的进程
allowed the penguins to exploit the seas like never before. 使企鹅能够 以前所未有的方法利用海洋
Scanning for fish, it hovers like a hummingbird... 寻找鱼类时 它们像蜂鸟一样
Like most reptiles, they must bask in the sun to warm up. 与多数爬行动物一样 它们必须晒太阳以保暖
Feeding frenzies like these are still some of nature's grandest spectacles, 这样的疯狂进食 如今仍是大自然最宏伟的景象之一
With a head like a pickaxe and standing two and a half meters tall, 骇鸟的头像锄头 站立高达2.5米