We don't yet know why the cells we transplanted are not responding to the environment around them in the way that the cells that are already there respond.

我们还不知道我们移植的细胞为什么不以已经存在细胞的反应方式对周围环境作出反应。

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The study says it is not clear why men’s and women’s waistlines respond differently to marriage and divorce.

研究人员说，至于结婚和离婚对男性和女性腰围状况造成不同影响的原因，目前还无法给出明确解释。

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The finding helps physiologists understand why about 30% of children who suffer from bedwetting (nocturnal enuresis) do not respond to desmopressin, a drug that successfully treats the other 70%.

上述结果帮助了生理学家理解了为什么去氨加压素对约30%的尿床儿童(又称夜间遗尿症)不起作用，而这个药物对其他70%的尿床儿童却成功治疗。

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The data will be studied to uncover genetic differences that might explain why some people respond to standard medications and some do not.

WSJ: Citizen Scientists Take On the Health Establishment