1·When the American cheetahs disappeared, their influence on the evolution of pronghorn and presumably on other prey animals stopped.
当美洲猎豹消失后，它们对叉角羚进化的影响就停止了，对其他猎物的影响应该也停止了。
2·Importing African cheetahs to the western United States could, in theory, put the pronghorn back onto its natural evolutionary trajectory according to these biologists.
从理论上讲，把非洲猎豹引进美国西部，可以让叉角羚重新回到生物学家所说的自然进化轨道上。
3·Pronghorn, dependent on distance vision and speed to keep safe from predators, do not like willowy bottomlands, Seidler explained.
塞德勒解释说，叉角羚依赖远距视力和躲避捕食者的速度，不喜欢柳树成荫的洼地。