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英语翻译However,Halley(人名)had a friend named Newton(人名),who was

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英语翻译
However,Halley(人名)had a friend named Newton(人名),who was a brilliant mathematician.Newton thought he had already worked out that problem,but he coule not find the papers on which he had done it.He told Halley that the orbit of a comet had the shape of an ellipse(椭圆形).
Now Halley set to work.He figured out hte orbits of some of the comets that had been observed by scientists.He made a surprising discovery.The comets that appeared in the years 1531,1607,and 1682 all had the same orbit.Yet their appearances had been 75 to 76 years apart.
然而,哈雷有一个杰出的数学家朋友叫做牛顿.牛顿认为他已经解决了那个问题,不过他没有找到记录的论文,他告诉哈雷,彗星的轨道是呈椭圆型的.现在,哈雷也开始了他的工作.他估算了一些科学家们已经研究已久的彗星轨道,并得到一个惊人的发现:在1531年、1607年及1682年出现的彗星的轨道是一样的,而它们的出现相隔75年和76年