- but its distribution over the land is far from even.
不过 水在陆地上的分配极不平均 - Deserts cover one third of the land's surface
沙漠覆盖了地球表面的1/3 - and they're growing bigger every year.
而且面积每年都在增大 - This is the Kalahari Desert in Southern Africa.
这里是南部非洲的卡拉哈里沙漠 - It's the dry season
现在是旱季 - and thousands of elephants have started to travel in desperate search for water.
数千头大象开始长途跋涉 不顾一切地寻找水源 - All across Southern Africa animals are journeying for the same reason.
所有横穿南部非洲的野生动物 都怀有同样的目的
This is the Kalahari Desert in Southern Africa. 这里是南部非洲的卡拉哈里沙漠
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