珊瑚由数百万微小生物的遗骸组成，经过数百万年的堆积，每一百万年就形成了一座岛屿。
Coral was made up of the bodies of millions of tiny creatures, piled up over millions of years -a million years for each island.
随着她右手里的手术刀微妙地移动，她伸出左手指给我看经过数百万年的进化产生出来的奇迹。
With a scalpel held delicately in her right hand, she reaches over with her left to show what millions of years of evolution has produced.
经过数百万年的进化，人类身躯适应于最大程度的保护脆弱敏感的部位，并且人体愈加坚韧耐用。
Over millions of years, the human body has adapted to maximize efficiency, protect our most delicate areas, and be durable and tough.
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