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A man teaches a child how to use a sailing boat at the Water Day Picnic in Warsaw, Poland, on March 23, 2019. The picnic was held at the Multimedia Fountain Park on the occasion of International Water Day. (Xinhua/Jaap Arriens)
Water Day Picnic held in Warsaw, Poland
Source: Xinhua| 2019-03-24 08:28:10|Editor: Xiaoxia
