Right now, Amtrak covers roughly 21,000 miles of passenger rail in the US.

目前，美铁在美国的客运铁路里程约为 21000 英里。

Already in the first three days of the annual travel rush, passenger rail trips plummeted more than 70 percent.

在年度旅行高峰期的前三天，铁路旅客数量已经猛减了70%以上。

In some places, you can take Amtrak, the national passenger rail service.

在有些地方, 你可以乘坐全国客运火车 Amtrak。

Having it replace this: merger with all of the broader regional benefits that would come from the increased capital investment in PanAm's footprint amounts to making a fetish out of passenger rail.

与泛美航空增加的资本投资所带来的更广泛区域利益相比，这就变成了对客运铁路的过度崇拜。

Well, it probably comes down to the fact that  the largest and—arguably—most important piece of passenger rail infrastructure in  the United States relies on a single wire, and it turns out that that wire sucks.

好吧， 可能归根结底是因为美国规模最大、最重要的客运铁路基础设施依赖于一根电线，而事实证明这根电线很烂。