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Scientists on China's third arctic expedition retrieve a shallow-sea subsurface mooring system from the Arctic Ocean on the icebreaker Xuelong at the North Pole on September 8, 2008. The system was installed one month ago to collect hydrological data of the region. [Photo: Xinhua]
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![Scientists on China's third arctic expedition retrieve a shallow-sea subsurface mooring system from the Arctic Ocean on the icebreaker Xuelong at the North Pole on September 8, 2008. The system was installed one month ago to collect hydrological data of the region. [Photo: Xinhua]](http://images.china.cn/attachement/jpg/site1007/20080909/001109b42f980a3053c33b.jpg "Scientists on China's third arctic expedition retrieve a shallow-sea subsurface mooring system from the Arctic Ocean on the icebreaker Xuelong at the North Pole on September 8, 2008. The system was installed one month ago to collect hydrological data of the region. [Photo: Xinhua]")