The ibex choose the steepest cliffs to raise their young, 羱羊选择在最陡峭的绝壁上养育幼仔

13. but they are still so dizzyingly steep
    但却异常险峻
14. that in many places it's almost impossible to get a foothold.
    很多地方几乎无法立足
15. Yet Nubian ibex have made this their home.
    而努比亚羱羊还是栖息于此
16. The ibex choose the steepest cliffs to raise their young,
    羱羊选择在最陡峭的绝壁上养育幼仔
17. in safety, beyond the reach of predators.
    环境安全 没有天敌
18. But living in this sanctuary comes with a cost.
    在生活在这里也要付出代价
19. These nursery slopes are so steep,
    山崖过于陡峭

来自《行星地球 第二季 第二集 Planet Earth S02E02 山脉》第 16 行