Over tens of millions of years, its ancestors repurposed their wings, 经过数千万年 它们的祖先改变了翅膀的用途
so that tens of thousands might live? 是不是比较明智且仁慈的做法呢
Tens of thousands of rays in a single shoal. 数以万计的蝠鲼聚集在一起
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