Usually, these mountain streams only provide enough food for small animals to survive. 通常 山涧提供的食物 只能维持小型动物生存
But big animals find it difficult to get about here. 不过大型动物很难爬到这个地方
provide a winter refuge for some animals. 却能为一些动物提供越冬场所
The water brings a season of plenty for all animals. 水为所有动物都带来了一个丰收的季节
The Okavango becomes criss-crossed with trails as animals move into its heart. 动物们逐渐进入奥卡万戈的中心地带 这里的路变得纵横交错
It's a seasonal feast for animals of all kinds. 对所有动物来说 这是一场季节性的盛宴
All across Southern Africa animals are journeying for the same reason. 所有横穿南部非洲的野生动物 都怀有同样的目的
Nowhere else on Earth are so many animals on the move with the same urgent purpose. 如此多的动物出于同一个紧急目的 而进行大规模迁徙 这在地球上其它地方可看不到