将“denseness"翻译成中文

Traditionally, the densely populated areas have remained extremely stable, and have tended to expand.

历史上,人口密度大的区域极为稳定,而且呈现逐渐扩大的趋势。

Domestic sewerage is a particular concern, as it affects ecosystems close to densely populated areas.

生活污水尤其令人关切,因为生活污水会影响人口稠密地区附近的生态系统。