驱动蒸汽机车的能量可以储存在除水以外的其他物质中。
Energy to drive a steam locomotive can be stored in other materials besides water.
不过以超级车的标准来看，这样一台设计精美的机车定价并不过高。
By supercar standards, though, it is not extravagantly priced for a beautifully engineered machine.
例如，在1985年到1996年之间，美国的货运铁路显著地减少了他们的人员录用、轨道和机车队——却增加了他们运输的货物量。
Between 1985 and 1996, for example, America's freight railways dramatically reduced their employment, trackage, and their fleets of locomotives—while increasing the amount of cargo they hauled.
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