Sometimes the absence of something can be as telling as its presence. So it is with this year's Nobel prize for medicine. Two of the winners were Luc Montagnier and Francoise Barre-Sinoussi, who got it for the discovery of hiv, the virus that causes aids. But the third (and convention dictates that the prize is split a maximum of three ways) was Harald zur Hausen. He was awarded it for a completely different study, the one which showed that human papilloma viruses cause cervical cancer.
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机译：有时，某物的缺失可以像它的存在一样有说服力。今年的诺贝尔医学奖也是如此。两位获奖者是Luc Montagnier和Francoise Barre-Sinoussi，他们是因为发现了导致艾滋病的病毒HIV而获得的。但是第三个（和惯例规定，该奖项最多可通过三种方式分配）是Harald zur Hausen。他被授予一项完全不同的研究，该研究表明人类乳头瘤病毒可导致宫颈癌。
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