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。

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

youdao

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。

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

youdao