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Sniffer dogs participate in a national competition of earthquake rescue in Jinan, capital of east China's Shandong Province, Nov. 7, 2017. (Xinhua/Li Ziheng)
Sniffer dogs participate in a national competition of earthquake rescue in Jinan, capital of east China's Shandong Province, Nov. 7, 2017. (Xinhua/Li Ziheng)