探索世界之浩瀚沙漠 Wild Africa - Deserts 1
Africa is dominated by deserts, from the Kalahari in the south to the mighty Sahara in the north. These are fascinating worlds, each one unique, all a challenge. Yet life can conquer them and in the most surprising ways. This is an epic journey across Africa's magnificent deserts, a story of survival against the odds.
Africa. Seen from space, great swathes of sand and rock cover more than half the continent. In the far south, bordering the Atlantic is the world's most ancient desert, the Namib. For eighty million years, cold, dry winds have swept in from the ocean, denying the land moisture and piling enormous sand dunes against the shore.
Beautiful but impossibly dry, in a good year, the Namib gets just five centimeters of rain; in a bad year, it rains only sand. But buried within the dunes, there is treasure. Fragments of dead animals and plants swallowed long ago by the sand are swept to the surface, offering a crucial lifeline.
Beetles, many different species have found ways to harvest this bounty. Along with termites and lizards, they're the foundations for a delicate chain of life in the Namib.
against the odds:very unexpectedly 非常出人意料的
dune:a hill made of sand near the sea or in the desert 沙丘
swathe:a long thin area of something, especially land 大區(qū)域 地帶
bounty:literary food or wealth that is provided in large amounts 豐富食物
Kalahari:喀拉哈里沙漠,覆蓋贊比亞 博茨瓦爾 南非
Namib:納米布沙漠 以月牙形的沙丘為特征
