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Perhaps it’s the biggest question science has left to answer, how did life begin? Now, molecular biologists in Cambridge university have discovered tiny molecules of RNA which they say might provide some clues. Science journalist and author Philip Ball explains what we know and whether we’ll ever find the origins of life on earth.。关于这个话题，夫子提供了深入分析
Туристы наблюдают за северным сиянием в Норвегии。业内人士推荐heLLoword翻译官方下载作为进阶阅读