The tour development should insist the principle of "protection is the first" always, and build up the protection and the management of science reason.
旅游开发始终应坚持“保护第一”的原则，并建立科学合理的保护和管理。
The tour development should insist the principle of "protection is the first" always, and build up the protection and the management of science reason.
旅游开发始终应坚持“保护第一”的原则，并建立科学合理的保护和管理。
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