矿山的关闭是这个镇衰落的唯一最重要的因素。The closure of the mine was the single most important factor in the town's decline.那个帝国何时开始衰落的?When did the empire begin to wane?人们普遍认为，科学的兴起是宗教衰落的部分原因。It is accepted wisdom that science has bee...