Butler's tour resort life cycle theory is an important theoretical foundation in our study of the tourism evolution process to provide a positive theoretical framework.

巴特勒的旅游地生命周期理论作为重要的理论基础，为我们研究旅游地的演化进程提供了积极的理论框架。

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With the evolution of virtual reality technology, tourism will increasingly become a combination of physical and virtual worlds.

随着虚拟现实技术的发展，在旅游业中现实与虚拟将日益紧密结合。

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Thus, the evolution shapes and characteristics of the model in different stages are explained according to the time order of the tourism development.

并按照旅游开发的时序关系，阐述了该模型在不同阶段的演变形态和特征。

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Medical tourism to India and Thailand is evolution toward lower costs.

FORBES: Magazine Article

Tourism bosses are hoping this year's Evolution Festival will bring millions of pounds into the North East.

BBC: Evolution Festival 2012 line-up announced