Stock Photo - 22 March 2022, Lower Saxony, Emden: Four pumps are installed in the Knock sluice and pumping station for inland drainage. Photo: Sina Schuldt/dpa. - Emden/Lower Saxony/Germany

Stock Photo: 22 March 2022, Lower Saxony, Emden: Four pumps are installed in the Knock sluice and pumping station for inland drainage. Photo: Sina Schuldt/dpa.

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