纽约地铁营运铁轨约660英里,加上辅助维修铁轨,总长达840

各位,知道840英里的概念吗?您还会相信所谓台湾人的马屁报道吗?
摘自纽约地铁公司网站:Miles of Track: Approximately 660 in passenger service. Counting track used for non-revenue purposes (e.g., in subway yards), the number is more than 840 miles.

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