长期以来,东京是城市规划者的梦魇。每一个角落都充满了弯弯曲曲的窄路、挤塞的街区和汹涌的人流。因此,日本负责城市规划的官员们不得不眼向下看,开始探讨新的疆域——地下深处。最大危险是坍塌在地下深处挖掘的最大问题是坍塌的危险,工程师们现已克服了这个困难。他们用一个形似气缸、大如房间的“盾器”机械人,利用 Tokyo has long been a nightmare for urban planners. Every corner is full of crooked narrow streets, congested neighborhoods, and turbulent people. Therefore, the officials responsible for urban planning in Japan have to look down and start exploring new territories—deep underground. The biggest danger is that the biggest problem that collapses in the deep underground is the danger of collapse. Engineers have now overcome this difficulty. They use a “shield” robot that resembles a cylinder and is as large as a room.