单词	Northern ethnic groups
释义	Northern ethnic groups 北方民族
随便看	Coal mine methane coal mine mine shaft Coal mine mining Coal mine model coal mine moni-toring coal mine monitoring management system coal mine monitor system coal-mine pit coal mine powder coal-mine powder coal mine power distribution coal mine power grid coal mine power network coal-mine power supply coalmine power-supply system coal mine production coal mine project coalminer coal mine safety management system coal mine safety manages coal mine safety monitoring coal mine safety monitoring system coal mine safety monitoring systems coal mine safety production coal miner