求翻译：其次要对旅游开发者和经营者进行宣传教育，使其能够真正认识生态旅游的本质，树立科学的生态旅游开发和经营的观念。要以可持续发展思想为指导，重视旅游开发的环境效应评估，把旅游环境当作旅游业的生命和形象。并通过外部约束规范防止各种掠夺性的旅游开发和经营行为。是什么意思？

Second, to the development of tourism operators to carry out publicity and education to enable them to truly understand the nature of eco-tourism, eco-tourism and establish a scientific concept of development and operation. To sustainable development thinking, attention to assessment of environmenta

Second, it is necessary to the development of tourism, education, advocacy and operators to enable them to truly understand the essence ecotourism and establish a scientific concept of eco-tourism development and management. It is necessary to the concept of sustainable development as the guide, and

Next must carries on the propaganda education to the traveling exploiter and the operator, enables its to know truly the eco-tourism the essence, the setting up science eco-tourism develops the idea which and manages.Must take the sustainable development thought as the instruction, takes to travel t

Next to tourism developers and managers ' awareness so that they can really understand the essence of eco-tourism, eco-tourism development and operation of scientific concepts. To be guided by the idea of sustainable development, environmental effect assessment of importance to tourism development,

Secondly should propagate and educate to travel developer and operator, enable it to really realize the essence of the eco-tour, establish the ideas of scientific ecological tourism deve