这样的巨鳄能在这样的生态系统中轻松担当顶级掠食者的角色。
Such megacrocs, then, could easily have acted as top predators in this ecosystem.
当像鲨鱼这样的顶级掠食者从环境中消失时，生态系统就会陷入混乱。
When top predators like sharks disappear from their environments, ecosystems fall out of whack.
我们现在知道它的长腿使之成为顶级掠食者，这种哺乳动物能够长距离追逐猎物，特别是野牛。
We now know that its long legs made it a top predator, a mammal that could run down its prey at long distances, particularly, bison.
我们现在知道它的长腿使之成为顶级掠食者，这种哺乳动物能够长距离追逐猎物，特别是野牛。
We now know that its long legs made it a top predator, a mammal that could run down its prey at long distances, particularly, bison.
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