Toledo cromlech measuring 12 metres in diameter discovered. It formed part of a megalithic complex dating back some 6,000 years, which served as a meeting place and a site for rituals.
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科学发现和最新研究正在改变我们对宇宙和生命的认知。最重要和最有趣的科学事件，从基础性的突破到应用技术。我们报道那些拓展知识边界的发现、理论和研究。