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For centuries it has been one of the most vexing mysteries for mankind: are we, the seven billion inhabitants of this wondrous [en]blue planet really alone, or is there life somewhere out there in the universe? 数百年来，人类一直为一个最大的谜团所困扰：我们这70亿生活在这个奇妙的蓝色星球上的居民，真的是孤独的吗，还是宇宙某处其实存在着生命？ Several days ago, we came a step closer to answering that tantalising question with the landmark announcement by Nasa scientists of the discovery of a new solar system that has at least three Earth-like planets — with climates that just might support life. 几天前，NASA科学家公布了一项里程碑式的重大发现：他们发现一个新的太阳系，其中至少有3个地球这样的行星，而且这些星球上的气候条件也许能维持生命，这项发现使我们离谜题的答案又近了一步。 | 
