Lake Malawi, the smallest of the three, 马拉维湖是这3个湖泊中最小的
the rivers are not only a vital source of drinking water, 河流不仅是唯一能解渴的重要水源
This is one of the largest concentrations of Nile crocodiles in Africa, 这里是非洲一处最大的尼罗鳄聚集地
Now they are carrying heavy loads of sediment 河流中带着大量的泥沙
Lines of wildebeest are on their march. 一队队的角马正在迁徙途中
The Mara river, snaking across the plains of East Africa. 马拉河蜿蜒地穿过东非平原
The annual arrival of spawning salmon 鲑鱼每年都会到河里产卵
brings huge quantities of food into these high rivers that normally struggle to support much life. 于是这些平常只能勉强维持众多动物生计的 高山河流终于有了提供饕餮大餐的机会
Although relatively lifeless, the power of the upland rivers to shape the landscape 尽管高山河流的生物量相对较少 它们却有能力改变地形