By and large, however, most reports on age patterning in hypoplasia occurrence indicate a peak in defects at 2 to 4 years of age, regardless of geographic or ecological setting, a factor that most workers have attributed to nutritional stresses of postweaning diets.
句中a factor that most workers have attributed to nutritional stresses of postweaning diets.是什么成分?
By and large, however, most reports on age patterning in hypoplasia occurrence indicate a peak in defects at 2 to 4 years of age, regardless of geographic or ecological setting, a factor that most workers have attributed to nutritional stresses of postweaning diets.
1. setting=设置的场景,背景. // 这种...背景 (是一个) a factor
2. 不考虑地理的或者说是生态上的背景(如何),即不考虑这么一个(被大多数工作人员归属于...的) 因素
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结构:
总体上,这些 reports 指示有XXX,而其中并不管YYY如何,这个YYY是一个....的因素