The range at its centre rises to 3 miles high 山脉中心地带的山峰伫立高达3英里
its summit too steep to hold a snow field. 高峻挺拔的峰顶甚至无法附着积雪
Moving at 250 miles an hour, an avalanche destroys everything in its path. 雪崩时速可达250英里/小时 足以摧毁路过的一切
slid beneath the South American continent, buckling its edge. 俯冲到南美洲板块之下 造成它的边缘隆起
enabling them to move its speed through the water. 使它们能在水里快速奔走
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 follows the tracks of its mother, 它仍追随着母亲的脚步
Its mother does everything possible to help it. 母象尽可能地去帮它一把
but its distribution over the land is far from even. 不过 水在陆地上的分配极不平均