本文分析了武汉旅游文化形象的现状，提出了“以城市推销促城市旅游文化形象建设”的基本思路。
The paper analyzes the status quo of the cultural image of tourism in Wuhan and puts forward the basic thought that "building the cultural image of urban tourism by promoting cities".
他跑遍这个城市为一个家具公司作推销。
旅行推销员问题是一个最受人喜爱的数学难题：如果一个推销员不得不访问几个城市，怎样走最短的路线使他一次到达这几个城市。
The traveling salesman problem is a favorite math conundrum: if a salesman has to visit a bunch of cities, how do you get him to all of them once via the shortest possible route.
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