The fatal freeze was caused by a 60% drop in carbon dioxide. 致命的冰冻 是由二氧化碳减少60%所导致
Because in these waters, they hunt using not just sight, 因为在这些水域中 它们捕食不仅利用视觉
Here, trilobites are still in their prime, 在这里 三叶虫仍处于巅峰状态
In the story of life, armor has been such a success 在生命的故事中 护甲是如此成功
And in the tropical shallows 508 million years ago, 在5.08亿年前的热带浅海中
Trilobites are one of the first in a brand-new dynasty, 三叶虫 是一个全新王朝中的首批生物之一
And one group adapted in a way never seen before. 有一群生物以前所未见的方式 适应了这种转变
The arrival of predation was a seismic shift in the ancient seas. 捕食者的出现 是古代海洋中的一次颠覆性转变