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(单词翻译)
Today’s mystery concerns geological formations along the slopes of Mount Rainier in Washington State. Mount Rainier is a volcano, so we aren’t surprised to see hardened lava1 flows left over from past eruptions2. We are surprised to see these flows sticking to high ridges3 and hilltops, ignoring deep valleys to either side. If molten lava flows like other liquids, we’d expect it to follow the path of least resistance and flow down into valleys. We can solve the mystery of the mountain-climbing lava through investigation4. For decades, the prevailing5 theory of how these features formed went something like this: Long ago, when the molten lava first poured out of the volcano, those hill tops were the bottoms of low-lying valleys.
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1
lava
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| n.熔岩,火山岩 | |
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2
eruptions
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| n.喷发,爆发( eruption的名词复数 ) | |
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3
ridges
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| 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
investigation
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| n.调查,调查研究 | |
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5
prevailing
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| adj.盛行的;占优势的;主要的 | |
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