单词：unboggy
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By combining their isotope findings with other fossil residuespollen levels and so on, 把对同位素测量的结果和能够说明其他情况（如花粉浓度等）的别的化石残留物结合起来， scientists can, with considerable confiden
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This is Alaska today, a wetland of forests, boggy tundra, lakes and rivers rivers that still churn out fresh clues to the Ice Age past. This is a brick-sized tooth, and it belong to a woolly mammoth. Its narrow ridges of enamel tell us more about how
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London is one of the busiest financial centers of the modern world. And historians have revealed evidence that two thousand years ago, business deals were being struck on exactly the same spot. Archeologists have unearthed the oldest handwritten docu
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But what most puzzled and confounded you was a long, limber, portentous, black mass of something hovering in the centre of the picture over three blue, dim, perpendicular lines floating in a nameless yeast. 但是最使人大惑不解的是:在那张画
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