If we descend from the road up the stairs to the subway and retracts just a train in the station (and this is probably because the stairs are long and the cycle times short), then blows a wind to the ears. If one had as yet prominent ears, the feeling would be even more intense, but also so I feel almost weightless when I slip late in the subway.
Langer access route In the selection of Route, the way one should always prefer the "old" lines, because they are near the surface and thus are the access routes much shorter. The more lines were created in the past, the deeper you had to build the existing lines to undermine.
access barrier in the state of repair And on the edge of notes: Contrary to popular belief, it is not difficult vorzutreiben a tunnel, the deeper one goes. Va shallow tunnels often have tremors and subsidence of neighboring buildings to follow and the quality of the ground will always be with depth.
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