so bare rock is a vital commodity. 于是裸岩就成了最重要的繁殖地

27. Antarctic waters are so rich that visitors come from far and wide to harvest them.
    南极富饶的海水吸引着千里之外的客人来觅食
28. Vast numbers of chinstrap penguins come ashore to breed.
    颊带企鹅成群结队地来到这里的岸边繁衍生息
29. No bird will lay their eggs directly onto ice
    企鹅不会把蛋直接下在冰面上
30. so bare rock is a vital commodity.
    于是裸岩就成了最重要的繁殖地
31. The best patches are worth the climb.
    爬上最好的地方就算辛苦也是值得的
32. The cliff tops are soon stained pink
    数以万计的企鹅在此筑巢
33. with the droppings of tens of thousands of nesting penguins.
    它们的粪便使山顶看起来一片粉红

来自《行星地球 第一季 第六集 Planet Earth S01E06 冰雪世界》第 30 行