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探索世界奧秘之Wild Europe-Genesis (歐洲自然寫真) Unit13

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Wild Europe - Genesis 肇始之初- 13

As the sun beat down, something like 4,000 cubic kilometers of water evaporated from the Mediterranean surface every year. And with no Atlantic water to replenish it, the Mediterranean dried out. In just a thousand years, it became a desert basin of salt pans and caustic lakes. The rivers that once fed the Mediterranean cut deeper and deeper into the rock, chasing the dropping shoreline and forming a labyrinth of dramatic gorges.

Just a few million years ago, France's Rhone Valley must have looked more like the Grand Canyon. So intense was the heat in the basin that these waterfalls evaporated before they even reached the old seafloor. For tens of thousands of years, a natural dam between present-day Morocco and the Rock of Gibraltar held the waters of the Atlantic bay. The Mediterranean basin remained an almost lifeless expanse of salt, sand and parched earth. But as Africa pushed and pulled Europe's southern boundary, the pressures on the crust became unbearable. Rising tides weakened the land bridge and then the Atlantic burst its way over the precipice. So began the most gigantic flood ever. At its peak, enormous waterfalls a thousand times grander than Niagara thundered into the basin. More than 100 cubic kilometers of water gushed past Gibraltar every day.

words and expressions

replenish: To fill or make complete again; add a new stock or supply to:
補充:把…再裝滿或再備足;給…新添備料或供給

caustic: Capable of burning, corroding, dissolving, or eating away by chemical action.腐蝕性的:通過化學反應可被灼燒、腐蝕、銷溶或蝕盡的

expanse: A wide and open extent, as of surface, land, or sky.
廣闊:廣闊的水面、陸地或天空

parched:炎熱的

precipice:An overhanging or extremely steep mass of rock, such as a crag or the face of a cliff.
懸崖:懸崖或極其陡峭的巖石,如巖崖或懸崖壁

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replenish [ri'pleniʃ]

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vt. 補充,再裝滿 vi. 補充

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enormous [i'nɔ:məs]

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adj. 巨大的,龐大的

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stock [stɔk]

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n. 存貨,儲備; 樹干; 血統; 股份; 家畜

 
capable ['keipəbl]

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adj. 有能力的,足以勝任的,有 ... 傾向的

 
burst [bə:st]

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n. 破裂,陣,爆發
v. 爆裂,迸發

 
labyrinth ['læbərinθ]

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n. 迷宮,難解的事件

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supply [sə'plai]

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n. 補給,供給,供應,貯備
vt. 補給,供

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mass [mæs]

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n. 塊,大量,眾多
adj. 群眾的,大規模

 
steep [sti:p]

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adj. 陡峭的,險峻的,(價格)過高的
n.

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extent [iks'tent]

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n. 廣度,寬度,長度,大小,范圍,范圍,程度

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