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Environmental protection workers on a refloatation boat clear the blue-green algae on the Chaohu Lake in Hefei, east China's Anhui Province, July 3, 2010. Environmental protection department of Hefei and Chaohu City organized workers to clear the blue-green algae overrunning on the Chaohu Lake recently. [Xinhua]
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![Environmental protection workers on a refloatation boat clear the blue-green algae on the Chaohu Lake in Hefei, east China's Anhui Province, July 3, 2010. Environmental protection department of Hefei and Chaohu City organized workers to clear the blue-green algae overrunning on the Chaohu Lake recently. [Xinhua]](http://images.china.cn/attachement/jpg/site1007/20100705/00114320f5750d9b7f911a.jpg "Environmental protection workers on a refloatation boat clear the blue-green algae on the Chaohu Lake in Hefei, east China's Anhui Province, July 3, 2010. Environmental protection department of Hefei and Chaohu City organized workers to clear the blue-green algae overrunning on the Chaohu Lake recently. [Xinhua]")
