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几十年来,有些人一直怀疑可能还有其他人,能够与我们交流,甚至访问我们的世界的智能生物。这听起来像是科幻小说,但今天来自全球各地的科学家正在宇宙中搜寻来自外星人的信号。2006 年,夫妻团队 Dunca
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Volcanoes have long helped shape the Earth. But what is less well known is that there are volcanoes
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The car has shrunk the world, increased personal freedom and in so many ways expanded our horizons,
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第20期
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A few weeks ago, the National Health Service was hit by a widespread and devastating cyber attack -
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