His chief work was on the conic sections but he also wrote on other subjects.
他的主要著作是关于圆锥线的，但也写过其他方面的著作。
His father, a tribal chief, did not think basketball was "good work for a Dinka."
他的父亲是一位部落首领，认为对丁卡人来说，篮球并不是一项好的职业。
His father, a tribal chief, did not think basketball was "good work for a Dinka."
他的父亲是一位部落首领，认为对丁卡人来说，篮球并不是一项好的职业。
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