【彩神APP‖app下载_彩神APP‖app下载官网】Water quality of Erhai Lake improves with active treatment

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Villagers eliminate water plants in Erhai Lake in Dali, southwest China's Yunnan Province, Aug. 10, 2019. Water quality of Erhai Lake has improved with active treatment since the beginning of this year. (Xinhua/Qin Qing)

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