人口多，距離長（因為駕駛太勞累）就適合發展高鐵。但要是人口少將來又自動駕駛了就解決這問題了。和local鏈接都順帶解決了

來源: Narnar 於 2018-07-01 20:31:37 [舊帖] [給我悄悄話] 本文已被閱讀：次

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