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Gibbs is perhaps the most brilliant person that most people have never heard of. Modest to the point of near invisibility, he passed virtually the whole of his life, apart from three years spent studying in Europe, within a three-block area bounded b

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converge v．会聚，集中于一点 conversant adj．精通的，熟知的 convert v．使改变（信仰等）n．改变信仰的人 conversion n．转变，皈依 convertible adj．可转换的，

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