Solar Energy Water Cleaning Devices Equipped in Parks
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Visitors curiously watch a solar energy water cleaning device located in a lake in Zizhuyuan Park in Beijing, capital of China, on August 14, 2009. [Xinhua]
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A boat moves past a solar energy water cleaning device in a lake in Zizhuyuan Park in Beijing, capital of China, on August 14, 2009. [Xinhua] |
