are home to some of the largest grass-eating mammals on our planet. 草原上生活着世界上最大的
These clouds drop all their water on the southern side of the mountains. 雨全都下在喜马拉雅山南边的山峰上
Pika, a relative of the rabbit. It, too, feeds on grass. 鼠兔 兔子的亲戚,和兔子一样以草为食
This is midsummer on the Tibetan plateau, 这是西藏高原的仲夏
and nowhere is more impressive than on the veldt of South Africa. 天下最美丽动人的草原非南非的维尔德草原莫属
This rich pasture once supported the greatest herds ever seen on our planet. 这里的大草原肥沃甘美 曾经养育着地球上最大的动物群落
For them, finding food on the plains is an even greater challenge. 对于狼来说 在茫茫大草原上寻食甚至更为艰辛
Here, geese can nest on the ground in relative safety. 在这里 雪雁可以比较放心地把巢筑在地上
and continue to sustain the biggest herds on Earth. 草便又继续维系着地球上 最大的动物群落的食物需要