diversity ratio

例句：

1. 1. The diversity ratio of the population is a key factor in determining its overall health.
   人口的多样性比率是决定其整体健康的关键因素。
2. 2. The company's diversity ratio has improved significantly since implementing this policy.
   公司实施这项政策后，多样性比率有了显著提高。
3. 3. The research team found that the diversity ratio was higher in the urban areas than in the rural ones.
   研究团队发现，城市地区的多样性比率高于农村地区。