This paper chooses the west district in Linshui as research object, and studies that the coalmining impacting on environment and utilizing wastewater.是什么意思_This paper chooses the west district in Linshui as research object, and studies that the coalmining impacting on environment and utilizing wastewater.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句