- But they owe their rise to the fall of their greatest rivals.
但它们的崛起归功于 最强大竞争对手的灭亡 - Back in the ancient seas,
回到古代海洋 - and Dunkleosteus had reigned for 20 million years.
邓氏鱼已经统治了2000万年 - So vicious a predator
它们是如此凶悍的捕食者 - that not even early sharks could compete.
以至于早期的鲨鱼也无法与之匹敌 - But Dunkleosteus was to suffer from a devastating quirk of fate...
但邓氏鱼即将遭受毁灭性打击 - ...caused by plankton.
这一切都源于浮游生物