好心人帮忙翻译下这段话，翻成英文的，不要在线翻的，专业点的，因为论文要用，谢谢了！

World Horticultural Expo as a sweeping international event,it affects many aspect to the host city even the whole country .the conduct of the Xi'an 2011 International Horticultural Expo,It brought huge positive impact on tourism, and it was the greatest opportunity to enhance the international competitiveness of the Xi'an tourism ，it was also the"catalyst" of accelerate the integration of shanxi tourism.It improved the visualize and popularity of Xi'an and expand the scale of tourist , it consummated the infrastructure Xi'an tourism and showed the rich tour resources,it added new employment opportunities to the tourism.The 2011 International Horticultural Exposition was not only a huge opportunity, but also the challenge to xi'an Tourism. . For example, high traffic during the World Horticultural Expo made no convenience to the visitors and it also bought the Horticultural ecological problems.In addition, we were also worry about the problem Xi'an tourism facing after the World Horticultural Expo . The issue analysed the positive and negative effects of World Horticultural Expo to shanghai tourism . We were making the right advice and solutionas to respond to World Horticultural Expos.