Konigsberg had seven Bridges, and in 1736 Euler proved it was impossible to find a path that allowed you to cross each bridge exactly once.

哥尼斯堡曾有七座桥梁，1736年，欧拉证明了要走过哥尼斯堡的七座桥且每桥只通过一次是不可能的。

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Surrounding the path is a layer of water two centimetres thick, which is sprayed onto it every seven minutes by nozzles creating a temporary cloud and mist between the mountains.

路线周围还有一层大约两厘米深的水，通过接管这些水每隔七分钟就会蒸发成临时的山间云雾。

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And to demonstrate for the first time into state-owned assets supervision of the changing path of the seven major trends in this paper is the main point of innovation.

归纳论证并首次提出国有资产监管路径转变的七大趋势，是本论文的主要创新点。

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In this problem, a salesman must chart a path through seven cities in which he visits each one only once.

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