13,000 years ago, the ice age cheetah was the pronghorn's greatest enemy.
在13,000年前的冰河时代，猎豹是叉角羚的天敌)^s^7h+TNaOKlS。
And pronghorn would have needed all their amazing speed.
叉角羚以其令人惊叹的速度著称Ce%PH=f&UA。
The American cheetah was larger than its African cousin. But it had the same Achilles' heel.
美洲豹比非洲豹的体型要大z*)czgF4YwXS1b^k。但他们的致命弱点相同8aX7p;UOz8SoX+b#7。
A cheetah's high-performance muscles overheat in minutes, and unlike pronghorn, they can't switch to cruising speed.
猎豹高性能的肌肉会在几分钟内变热，和叉角羚不同的是，猎豹不能长时间保持这一速度U)q6#HROET~%。
So if the pronghorn managed to outrun the cheetah for the crucial first few hundred meters, it would probably survive.
所以如果叉角羚能在开始关键的几百米内跑过猎豹，那便有可能幸存tE|2]p@=cZ_uu=T。
The cheetah hasn't roamed the plains of North America for thousands of years, but pronghorn are still prime for the chase.
几千年来，猎豹一直没有在北美平原游荡，而叉角羚在这场角逐中依然占据优势RzH)GBX&!UV9+。
Other extinct links to Africa had been found in caves steep in the Ozark Mountains of Missouri.
其他的一些与非洲相关联的线索十分稀缺，但被发现于密苏里州欧扎克山脉的悬崖峭壁中&kEa=oGVk|st3PuT-@H。
Preserved in mud were huge prints recreated here, more than 18 centimetres wide. What could have made them?
这里的淤泥中保存下来一些脚印，有18多厘米宽5^grKdTcpWu!6lj。这是什么动物的脚印？
They belonged to another ice age cat, the top cat of the plains, a lion.
他们是另一种冰河时代的猫科动物，也是美洲平原猫科动物的王者——狮子R8MU[tERFHmq*pbGOCz。

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