石炭井shí tàn jǐng释义Shitanjing subdistrict of Dawukou district 大武口區|大武口区[Da4 wu3 kou3 qu1] of Shizuishan city 石嘴山市[Shi2 zui3 shan1 shi4], Ningxia单字详解石shi炭tan井jing