But one remarkable dynasty has had a greater impact than any other. 但有一个非凡的王朝 比其他任何王朝都更具影响力
and one of the most streamlined bodies of any animal, 以及动物中最流线型的身体
But one species of hummingbird has no need to battle. 但有一种蜂鸟不需要战斗
But one group of animals has found a way to survive here. 但有一群动物 找到了在这里生存的方法
but one giant leap for life on Earth. 地球生物一大步
and the one iconic animal that ruled over them all. 尤其是那个统治一切的标志性动物