- on which they depend.
季节性生长的青草 - Like all grassland creatures, they are at the mercy
和其他草原生物一样 他们依赖着 - of these unpredictable but ultimately bountiful lands.
这变化莫测而又极其慷慨的大草原 - Grass can survive some of the harshest conditions on earth,
青草可以在地球上最为极端的环境下生长 - flood, fire and frost, and still flourish.
经受洪水 火灾和冰霜的考验仍然生机盎然 - So it is that grasslands provide a stage
所以草原为地球上 - for the greatest gatherings of wildlife on planet earth.
最壮观的野生动物群提供了舞台