is a creature so big it won't even notice them. 是体型大到根本注意不到它们的动物
Climbing grass is harder than climbing trees, 爬草比爬树更困难
this is a landscape as vast and towering as any rainforest. 这样的草丛就像雨林一样高大葱郁
Grasslands occur where rain is too sporadic for forests to exist. 降雨量不足以养育森林时就会出现草原
so their numbers grow rapidly just when grass is plentiful. 这样能够在草源充足时迅速繁衍
For these calves, the clock is already ticking. 对这两只小羊来说 时间紧迫
That is the way things are on grasslands across the planet. 地球上的草原都是如此