生态旅游研究是一个既有理论意义又有实践意义的重大课题。

Ecotourism study is a subject which has significance both in theory and in practice.

youdao

第二部分：生态旅游内涵与开发实践。

Part two: The definition and development practice of ecotourism.

youdao

第二部分：生态旅游内涵与开发实践。

Part two: The definition and development practice of ecotourism.

youdao