研究人类免疫缺陷病毒（HIV）感染的流行程度与一些非洲国家贫富状态的根本的结构性因素之间的关系。
To investigate the relationships between the prevalence of human immunodeficiency virus (HIV) infection and underlying structural factors of poverty and wealth in several African countries.
在印度泰米尔纳德邦，城市化与一些非传染性疾病风险因素的流行程度相关。
Urbanicity is associated with the prevalence of several NCD risk factors in Tamil Nadu, India.
当开始允许系统的子类型、逻辑系统部分以及所有其它杂项因素时，这一行程序会变成300行。
When you start allowing for system subtypes, logical system divisions, and all the other miscellaneous factors, your one-liner could end up being 300 lines.
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