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Chapter 1 Sam 第一章 萨姆 Walking back to camp through the swamp, Sam wondered whether to tell his father what he had seen. 萨姆一面从沼泽地往营地走,一面犹豫着,不知是否该把他刚才看见的一切告诉爸爸。 I know

发表于:2019-01-01 / 阅读(91) / 评论(0) 分类 吹小号的天鹅

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

发表于:2019-01-17 / 阅读(124) / 评论(0) 分类 万物简史

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

发表于:2019-01-23 / 阅读(109) / 评论(0) 分类 探索与发现2012年

Experimental prairie farm designed to prove farmers can make a living off native grasses Johanna Sailor | Brookings, South Dakota 12 February 2010 Photo: Courtesy EcoSun Prairie Farm EcoSun Prairie Farm is intended to be a working model of agricultur

发表于:2019-02-03 / 阅读(99) / 评论(0) 分类 VOA标准英语2010年(二月)

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

发表于:2019-02-14 / 阅读(96) / 评论(0) 分类 中英双语新闻

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

发表于:2019-02-17 / 阅读(95) / 评论(0) 分类 白鲸记