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Transcript by myconsent
One thousand years before Columbus, there were pyramid builders, warriors1 -- the architects of an empire in South America. The Tiwanaku(蒂瓦纳科人) lived in a valley of Lake Titicaca(的的喀喀湖) for 1,500 hundred years. And then their civilization vanished,leaving behind only stone ruins and the enduring mystery of their passing.
The centerpiece of Tiwanaku's spiritual power was the Akapana Pyramid. Surrounding the pyramid, cities and temples, was a vast maze2 of channels and ridges3.
Though they look like irrigation ditches, they were far too complex.
The mystery of their purpose is one that archaeologist Alan Kolata had been struggling to solve. Kolata had a hunch(预感), and to prove it he asked the local farmer to plant crops along the channel banks. Then the archaeologist and the farmers let in the water. Crops sprouted4 and began to grow. But then a tremendous frost hit the Altiplano.It devastated5 other fields, but the crops planted along the canals were not affected6.
“The key to the sophistication of these, uh, of these raised fields system are really these canals that you see here all around me. What's important about the them is they function like gigantic solar collectors. If you flap this water you'll see that it's warm enough to bathe in,and it's truly remarkable7 and here we are up at 14,000 feet. And that's really the key to the system. It really prevents frost from damaging the crops that would be growing up on these field platform surfaces here.”
The mystery was solved.The Tiwanaku had found a way to control the environment of the valley itself. Their canals stored heat during the day then radiated it over the fields at night. This remarkable system provided the wealth to build an empire, and to keep it for over a millennium8. But then amid growing political turmoil9, the empire began to decline. For the Tiwanaku, it was the end, but for the local farmers, it is a new beginning. Secured from the frost, the raised fields proved to be seven times more productive, providing hope for a better harvest, and pride for their ancestors’ wisdom that is returned from the past.
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1 warriors | |
武士,勇士,战士( warrior的名词复数 ) | |
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2 maze | |
n.迷宫,八阵图,混乱,迷惑 | |
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3 ridges | |
n.脊( ridge的名词复数 );山脊;脊状突起;大气层的)高压脊 | |
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4 sprouted | |
v.发芽( sprout的过去式和过去分词 );抽芽;出现;(使)涌现出 | |
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5 devastated | |
v.彻底破坏( devastate的过去式和过去分词);摧毁;毁灭;在感情上(精神上、财务上等)压垮adj.毁坏的;极为震惊的 | |
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6 affected | |
adj.不自然的,假装的 | |
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7 remarkable | |
adj.显著的,异常的,非凡的,值得注意的 | |
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8 millennium | |
n.一千年,千禧年;太平盛世 | |
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9 turmoil | |
n.骚乱,混乱,动乱 | |
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