various resident populations

• 不同人群

various resident populations的用法和样例：

例句

1. The Maine studies focused on the way that UVR exposure varies according to latitude, and the effects this seemed to have on the characteristics and health of populations.
   缅因医院的研究关注于紫外线照射在不同纬度的变化，其似乎对不同人群的性格和健康都有效果。