In oder to help make - decisin for wuhan ' s tourism sustainable development , the thesis , on the basis of analyzing the background , the conception , and the main technology system of the digital city , discusses the influence and the function of the digital city to tourism products , tourist marketing , tourism planning , tourisim management etc 摘要本文对数字城市提出的背景、概念等进行了介绍，着重分析了数字城市对旅游产品、服务、规划与管理等几个方面的影响及作用，为武汉市旅游业可持续发展提供决策和科学依据。
The metropolitan circle in nanjing , emerging out of the internal demand of urban development in the region , is characterized with powerful attraction of central cities , strong radiation of advantageous enterprises , increasing acceptance by medium - sized cities of the central ones and the future advantages of spanning development 南京都市圈是区域内城市发展的内在要求,南京都市圈商业的特点是：中心城市强大的吸引力，优势企业强大的辐射力，中等城市对中心城市商业的吸纳性增强，并具有跨越式发展的后发优势。
Big airlines have changed airline structure of point - to - point to that of hub - spoke . international airport tends to large - scale hinge and small - medium airport is facing more serious challenge for its limited spoke range and less lines . the subject of " the opportunities and challenges encountered by shanghai airport " sets forth the necessity of shanghai airport developing into an international aviation hinge and the importance of changing shanghai into international economic center 大型航空公司将原来点到点的城市对式航线结构调整为以几个城市为中心的“中枢?辐射” ( hub - spoke )系统航线结构，世界空港的发展趋势是枢纽空港的规模愈来愈大，而中小型空港，因其辐射范围有限，航线航班相对较少，生存和发展面临严峻的挑战。
Owing to the highway hub layout planning are being carried on in many cities at present , and the rolling revise of the layout plan is a continual process , the study on methods and applications of general layout planning of passenger stations of highway hub helps promote the work of layout planning programmed , standard and more scientific 由于目前许多城市对公路枢纽的布局规划仍在进行，同时布局方案的滚动修改也会不断进行下去，因此对公路枢纽客运站总体布局规划方法和应用的研究，有利于推动目前公路枢纽布局规划工作的程序化、规范化和科学化。
Because people often care nothing but economic worth of environmental resources , and forget the intrinsic ecology meaning of environments that mankind depend on for existence . cause city develop give an serious impact to environment more and more , then produce the result of deterioration of the environment 由于人们往往只关心环境资源的经济价值，忘却了作为人类赖以生存的环境组成所固有的生态学意义，造成城市对环境的冲击越来越严重，从而产生城市发展与环境恶化的因果关系。
Studies of intersectional labor flow , ranging from the classical lewis ' model of " dual structure " population flow to todaro ' s model of three - sector population flow , have been conducted against the background of rapidly expanding industrialization , quickly developing cities and highly elastic demand for labor in cities 摘要从刘易斯经典的“二元结构”人口流动模型到托达罗的三部门人口流动模型，对劳动力在部门间流动的研究都是在工业化迅速扩张、城市快速发展、城市对劳动力需求弹性很大的背景下进行的。
