在航线网络中,美联航不仅拥有美国最大的五个航空枢纽,同时还联通五大洲的339个机场,另外,更有星空联盟合作的强大市场资源,潜力巨大。然而,曾经雄踞国际航空市场的美联航,现在却难敌达美和美航。人们都认为,美联航再次崛起是有希望的,但是多年来,该航一直 In the airline network, United not only has the largest five aviation hubs in the United States, but also Unicom’s 339 airports on five continents. In addition, it has great potential for more powerful Star Alliance resources in the market. However, once the United Airlines dominated the international aviation market, now it is difficult to Damien Delta and American Airlines. People all think that it is hopeful that United will rise again, but over the years, it has been