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		     A:Scientists have found a second solar system in the universe.     科学家在宇宙中发现了第二个太阳系。     B:What's the second solar system?     什么是第二个太阳系?     A:It's just a system like ours, with a star and a number of planets going around it.     就跟我们的太阳系一样,有一个恒星和围着恒星转的几颗行星。     B:Is this good news or bad news?     这是好事还是坏事?     A:It's exciting news! If we find a second solar system, we might find a second earth!     这是激动人心的消息。如果我们能发现第二个太阳系,兴许就能发现第二个地球。     B:You mean with people on it?     你是说上面有人住的?     A:Yes! Isn't that exciting?     对啊。这难道还不让人激动吗?
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