单词：stelestereoscope
体视望远镜
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The political world of Berlin is now concentrated almost entirely in the center of the capital. Numerous new buildings had to be built here before the government could move from Bonn to Berlin. One of
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柏林之旅
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This is Scientific American 60 seconds science. Im S. Buschwik. Got a minute? During a physical exam, doctors pick up a lot from their patients including patients bacteria. To keep infections from spreading, physicians try to always wash their hands
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For most of the 20th century Turkish authorities were happy to lend their treasures for foreign exhibitions and ignored the provenance of most pieces in Western collections. Today, however, the government argues that any object without the correct pe
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