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  <title>水力帮农民解决大麻烦</title>
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  <description>许多国家把地热作为一种主要能源加以利用。在这一方面领先于世界的是中国，其次是瑞典和美国。它们都是如何利用能源的呢？</description>
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  <description>德国具环保意识的老百姓今天就已在购物时自带麻包、布袋，或用可堆肥降解的塑料袋，但大多数购物袋、包装袋还是用普通塑料做成的，这些塑料不会自然降解，只会污染环境，漂浮在海洋中危害海下生物。但这种情况其实是可改变的。</description>
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  <description>甲烷水合物就是冻结了的天然气。目前人们认为，储存在甲烷水合物中的能量比迄今知道的石油、天然气及煤炭储藏的能量要高。而新西兰的海底可能有大量甲烷水合物。要得到确切答案，还需进行实地考察测量。德国科学考察船“太阳号”就带着这个任务出发了。你也可以通过鼠标，亲身感受此次考察旅行。</description>
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