异特龙

The result, once natural selection had done its work over the course of millions of years, was the now familiar cast of Allosaurus and Tyrannosaurus rex.

结果，历经数百万年间的自然选择，形成了我们今日熟知的异特龙和雷克斯霸王龙族群。

It had a big brain and was a smart dinosaur.

异特龙有个大脑袋，所以它挺聪明。

The Allosaurus walked on two feet, but was slow. The Allosaurus could run.

异特龙是两条腿走路，但走的很慢，它也能跑。

The Allosaurus was a meat eater.

异特龙是肉食动物。

Allosaurus was a powerful predator that walked on two powerful legs, had a strong tail. The Allosaurus hunted in groups.

异特龙是个凶猛的捕食者，它有着强劲的后腿和健壮的尾巴，捕猎时是成群出击。