The site's natural resource recovery systems, developed by the local people, have saved the city of Kolkata from the costs of constructing and maintaining wastewater treatment plants.
此地由地方群众开发的自然资源恢复系统把科卡塔市从建设和维护废水处理装置的大量花费中解救了出来。
The site's natural resource recovery systems, developed by the local people, have saved the city of Kolkata from the costs of constructing and maintaining wastewater treatment plants.
此地由地方群众开发的自然资源恢复系统把科卡塔市从建设和维护废水处理装置的大量花费中解救了出来。
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