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最佳答案:From cell (0,0),the first unit in the same ring position (m,n),according to coun
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最佳答案:Sha river lies in the county in Ningxia,capital of Yinchuan City from 47 km.Its
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最佳答案:Longmen Grottoes location:at 12.5 kilometers south of Luoyang City,near Xiangsha