求翻译：2010年上海世博会可展示的内容有城市发展、城市生活、城市交通、城市产业、城市环境、城市文化、未来城市7个大类。预计2010年上海世博会的客源数可达5000万人次。是什么意思？

2010 Shanghai World Expo show urban development, urban life, urban transport, urban industrial, urban environment, urban culture, the city of the future into seven categories. Is expected that the 2010 Shanghai World Expo will be the source of up to 50 million people.

Shanghai World Expo 2010 will be the content can be displayed with urban development, urban life, urban transportation, urban industry, the urban environment, urban culture, and the future of city 7. It is expected that in 2010 Shanghai World Expo will be the source of visitors for up to 50 million

In 2010 the Shanghai World Expo may demonstrate the content will have the urban development, the city life, the municipal transportation, the city industry, the urban environment, the civic culture, the future city 7 big kinds.Estimated in 2010 the Shanghai World Expo the source of tourists number m

2010 Shanghai World Expo to showing the contents of urban development, urban life, urban transport, urban industries, urban environment, urban culture, city and 7 categories in the future. Number of tourists is expected in 2010 Shanghai World Expo can be up to 50 million passengers.

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