The machine crab prototype designed in this paper provides a test bench for theoretical research on multi-legged walking machines.

本论文所设计的仿生机器蟹可以为多足步行机理论研究提供一个试验平台。

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"That is one important reason intelligent machines are not yet walking around on the street," he says.

这就是为什么人工智能的机器还没有走在大街上的一个重要原因，“他说。”

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Then there are transportation technologies, which enable people to avoid walking, and also the shift from manual Labour to machines.

另外还有交通技术，这使人们能够避免走路，同时也将手工劳动转给机器。

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"The children are often hooked up to machines and walking around connected to machines, so if they have an area where they can go and sit with their families and have a normal meal it would be better, " she said.

BBC: Oliver, 2, and his mother Sophie Maloney