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All it has to do, is take its pick.
奇虾只需要挑选猎物，
The trilobite can't right itself, its soft belly is exposed.
三叶虫无法翻正寻体，它露出柔软的腹部，
Also found in the sea is Pikaia.
这些是皮卡虫，
Only an inch and a half long,
大约只有5公分长，
they may be the first organism with a spine.
但它们或许是最原始脊椎动物。
Over millions of years, this simple structure will evolve into the spine that keeps us standing.
数百万年下来，这种简单的结构将演化成使我们得以直立的脊椎。
Expecting to find life in ruins,
我们潜入海洋寻找生命的遗迹，
the oceans are in fact full of life.
结果看到生机盎然的世界。
Where trilobites scavenge and monsters prowl.
三叶虫觅食，庞然大物寻猎，
And where creatures begin to take on familiar forms.
生物开始呈现熟悉样貌，
Beneath the waves there are already tens of thousands of plant and animal species.
波涛之下已有数万种动植物，
The advance of life seems unstoppable.
生命的跃进似是势不可挡。
