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In the deserts of Utah, ancient rivers flowing across sandstone country steadily widened their canyons
在猶他州的沙漠中，古老的河流沖開巖壁，不斷拓寬這些峽谷
until now, the land between them has been reduced to spires and pinnacles.
直到把其間的土地削鑿成今天這樣的尖峰和石塔
With little or no soil to retain the water on the surface of the land, life here is scarce indeed.
由于幾乎沒有土壤保留地表水分，這里的生物極其稀少。
And when resources are limited, conflict is never far away.
當資源有限的時候，沖突自然不可避免。
These are Nubian ibex and they are squaring up for a duel.
這些是努比亞羱羊，它們正擺好架勢準備激戰。
And when trouble starts, a smart ibex knows that the best thing to do is to gain higher ground.
沖突一旦爆發，聰明的羱羊很清楚最好的戰術就是占領制高點。
These are actually subordinate male ibex, but their fights are, nonetheless, serious.
這些其實是次級別的公羱羊，但它們的戰斗依然十分激烈。
Losing one might mean never getting the chance to breed, ever.
失敗一次或許意味著將永遠失去生育權
When competitors are evenly matched, as they are here, duels can last for an hour.
同級別的參賽者在此公平競爭，決斗會持續一小時左右。
In this heat, the effort is truly exhausting.
高溫下的戰斗確實很耗費體力
But victory here will gain important ranking points on a male's way to the top.
但是這里的獲勝者會獲得重要的排名，一步步到達公羊排行榜的第一位。
