求翻译：节事旅游，作为社会现象的节事历史可以追溯到非常久远，但具有旅游经济影响的节事活动则蓬勃发展于近二十年。而上海也在20世纪80年代中后期，积极承办或主导创建了新型的节日庆典，体育赛事等节事活动。是什么意思？

Event Tourism Festival history as a social phenomenon can be traced back to very ancient, but with tourism economic impact of activities of the Festival is to flourish in nearly two decades. Shanghai in the late 1980s, also 20 century, actively undertaken or dominant to create a new type of festival

That section as a social phenomenon, and tourism section of the history can be traced back to the matter is very old, but with a section of the economic impacts of tourism development activities in the past 20 years. Shanghai is also in the 20th century in the mid to late 1980s, active contractors o

The festival matter traveling, may trace extremely remote as the social phenomenon festival matter history, but has the traveling economy influence festival matter activity then vigorous development in the recent 20 years.But Shanghai also in 1980s mid and late parts, positively undertook or the lea

Event tourism, as a social phenomenon of the history section can be trace back to a very long, but the economic impact of tourism activities can flourish in almost 20 years. And Shanghai in the late in the mid 1980 of the 20th century, actively undertaken or lead to create a new type of festivals, s

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