The Metropolitan reports show that they spent anywhere from $500,000 to $600,000 a mile building underground trolley lines which, at their own extravagant estimate, should have cost only $150,000.

他们每英里花费 500,000 美元到 600,000 美元建造地下有轨电车线路， 根据他们自己的奢侈估计， 这些线路的成本应该仅为 150,000 美元。