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The article entitled 'Eating Iron' in last month's issue of Eating for Health reported that a recent study found a correlation between high levels of iron in the diet and an increased risk of heart disease. Further, it is well established that there is a link between large amounts of red meat in the diet and heart disease, and red meat is high in iron. On the basis of the study and the well-established link between red meat and heart disease, we can conclude that the correlation between high iron levels and heart disease, then, is most probably a function of the correlation between red meat and heart disease.
看了精华区对它的讨论。刚刚查了一下在线字典关于function的解释:
4.Something closely related to another thing and dependent on it for its existence, value, or significance: Growth is a function of nutrition.