塔拉恰帕动物避难所的一个严寒的早晨，彭加比碰到两只在光影背景中正在争夺领地的雄性印度羚。
On a frigid winter morning at India's Tal Chappar animal sanctuary, Punjabi came upon two male blackbucks battling for dominance against a glowing backdrop of dust and light.
生存的斗争并不发生在这种争斗中，而是为了争夺有限的摄食区域，以及为了争夺没有食肉动物的领地。
The struggle for existence occurs not in such fights, but in the competition for limited feeding areas and for the occupancy of areas free from meat-eating animals.
争夺同一生态资源的物种趋向于朝着依赖不同资源的方向进化；而相互竞争的物种会逐渐改变他们的活动范围，使其领地不再重叠。
The physical structure of species competing for resources in the same ecological niche tends to gradually evolve in ways that allow them to occupy different niches.
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