求翻译：筼筜湖原本是一个天然港湾，1971年的围垦造田，使筼筜港变为筼筜湖。随着城市的发展，筼筜湖受到垃圾和污水的污染。为治理筼筜湖，厦门多次对筼筜湖进行大规模的综合整治，使湖区环境和防汛排涝能力得到很大改善。是什么意思？

Yuan Dan Lake was originally a natural harbor, reclaimed farmland in 1971, the port becomes Yuandang Yuan Dan Lake. With the development of the city, Lake Yuandang by garbage and sewage pollution. For the management of Yuan Dan Lake, Xiamen Yuan Dan Lake on several occasions for large-scale comprehe

Standing by the Yuandang lake originally was a natural harbor, 1971 enclosing the Saemangeum Reclamation, standing by the Yuandang Hong Kong into a standing by the Yuandang lake. Along with the development of the city, standing by the Yuandang lake is garbage and sewage pollution. Standing by the Yu

筼 筜 the lake is originally a natural harbor, 1971 cultivation made the field, caused 筼 筜 the port to become 筼 筜 the lake.Along with the city development, 筼 筜 the lake receives trash and the sewage pollution.In order to govern 筼 筜 the lake, Xiamen many times carries on the large-scale synthesis impro

Yundanghu was originally a natural harbour, 1971 enclose Tideland for cultivation, the species of the tall bamboo becomes yundanghu in Hong Kong. With the development of the city, yundanghu of garbage and sewage pollution. To combat yundanghu, large-scale comprehensive treatment of Xiamen yundanghu

Yuan Dan Lake was originally a natural harbor, reclaimed farmland in 1971, the port becomes Yuandang Yuan Dan Lake. With the development of the city, Lake Yuandang by garbage and sewage pollution. For the management of Yuan Dan Lake, Xiamen Yuan Dan Lake on several occasions for large-scale comprehe