胡安·马丁·德尔波特罗可能会让他难过，但他应当向他的天才同胞大卫·纳尔班迪安表示感谢。

Juan Martin del Potro: it may pain him to do it, but he ought to express his thanks to his ultra-talented countryman, David Nalbandian.

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胡尔维茨是菲利克斯·克莱因的学生和大卫·希尔伯特的老师。

Hurwitz was a student of FELIX KLEIN and teacher of DAVID HILBERT.

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