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Photo taken on Sept. 13 shows trash brought by the sea wave and heavy rainfall on a beach in the suburb of Dakar, Senegal. Given that trashes brought by sea wave and rainfall during the rainy season have polluted the coast, volunteers and local residents participated in a beach cleaning activity in Thiaroye-sur-Mer, a small town in the suburb of Dakar, hoping more tourists would be attracted by a more cleaner beach. (Photo by Louis Denga/Xinhua)