- came this new multitude of life in all its wondrous variety...
诞生了这个多样而奇妙的生命群体 - ...all perfectly adapted to the challenges of life.
它们全都完美地适应了生命的挑战 - The struggle to protect and raise one's young,
努力保护并养育幼崽 - to find food,
寻找食物 - and to breed.
繁育后代 - The cast of characters may have changed,
角色阵容也许已经改变 - but the essentials remain the same.
但关键因素依然相同