A frozen no-man's land at the end of the Earth. 那是地球边缘 天寒地冻 人迹罕至
But for a short time each year, the long, dark winter releases its grip. 每年却总有短短的一阵日子 漫长阴暗的冬天也会放松它的钳制
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
Grass is not confined to the tropics. 草不仅生长在热带地区
It manages to grow even in the bitter conditions of the Arctic. 即使在北极这样恶劣的环境下草也有办法生存下来
Beyond the limits of the last tree, the planet is barren and ice-locked. 在最后一批树木以外的地方, 处处是冰天雪地 一片荒芜
And the leaves and stems are cropped by great herds of antelope. 而叶子和茎则被巨大的羚羊群所享受
The East African savannahs alone sustain nearly two million wildebeest. 仅生活在东非稀树大草原的角马 就接近两百万(注:角马属羚羊的一种)
They trim the grass down to its roots, leaving little in their wake, 这些角马拼命地吃草 把草根上面的草茎部分全部吃掉
but within days the plant will recover 然而被吃掉的那部分仅在数天之内就能恢复生长