我们正在经历现代最严重的一段经济衰退。We are in one of the most severe recessions in modern times.投资可能会中断，而这会引起经济衰退。Investment could dry up and that could cause the economy to falter.他不得不收回他说过的公司能免受经济衰退影响的话。He has had to eat his words abou...
从1996年开始, 尾矿已堆存到一露天矿坑里,坑内处置是在原矿开采后的场地重新堆放矿山废弃物.Since 1996, tailings have been deposited in a mined - out pit.地下有很多资源,当被开采出来后, 我们称之为“原矿”When many minerals underground are mined, we called them raw ores.原矿品位是矿山生产中非常重要的技术经济...