Back in 1871, local wine merchant Alfred Speer patented the first "endless-travelling sidewalk", and promptly proposed an ambitious elevated moving walkway along Broadway.
早在1871年，当地的酒商al fred Speer便获得了第一条“连续移动人行道”的专利，并马上野心勃勃的提议沿着百老汇大街建立一条高层的移动人行道。
Back in 1871, local wine merchant Alfred Speer patented the first "endless-travelling sidewalk", and promptly proposed an ambitious elevated moving walkway along Broadway.
早在1871年，当地的酒商al fred Speer便获得了第一条“连续移动人行道”的专利，并马上野心勃勃的提议沿着百老汇大街建立一条高层的移动人行道。
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