Waste water, waste gas and solid waste caused by the mine and so on. 因此國家需要建立多元的礦山環(huán)境保護投資機制。
So he and the boys walked for more than a week, crossed the Senegal border and arrived at another mine in Mali. 所以，他和其他孩子一起走了一個(gè)多星期，穿過(guò)塞納加爾邊境，到了馬里北部的礦山。
To obtain the iron ore, Thwaites had to travel to a former mine in Wales that now serves as a museum. 為獲得鐵礦石，思偉茨不得不動(dòng)身前往威爾士的一座廢礦場(chǎng)，如今礦場(chǎng)已被改作博物館。
