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By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The

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For something that could revolutionize the world, its come along very slowly. The fuel cell was invented in 1839, but there was little development until the 1950s when NASA started to use them in space where they are still used today. Now, after yea

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My sister, a primary school teacher, was informed by one of her pupils that a bird had built its nest in the tree outside the classroom.

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伤口护理 wound management 伤口 wound 一、伤口的性质 Nature of Wound Bed 1、 健康肉芽形成 healthy granulation 2、 上皮形成 epithelialisation 3、 腐肉 slough 4、 黑色或棕色坏死组织 black/brown necrotic tissue 5、 其他（具体说明） specify 二、渗出液 Exu

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My sister, a primary school teacher, was informed by one of her pupils that a bird had built its nest in the tree outside the classroom. What kind of bird? my sister asked. I didn't see the bird, ma' am, only the nest, replied the child. Then, can yo

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英语博客：A feather nest.

It's time that I bought a new camera. I need a digital that has a decent zoom. I realized that the other day when I was outside, trying to get a good shot of two birds who were nesting. I had been busy throwing the ball to our dogs, when I saw a flas

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今天我们要讲的习惯词语有这样一个关键词，nest。Nest这个词有许多不同的解释， 最常用的意思是鸟窝，但是虫子、鱼儿、乌龟、兔子之类的动物下蛋、哺育儿女或者 歇息安身、遮风避雨的地

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LULU GARCIA-NAVARRO, HOST: Black lung, an epidemic of the coal miners' disease, is killing thousands of miners across Appalachia. NPR and the PBS program Frontline have been working together over the past year and uncovered that the U.S. government r