求翻译：With the evolvement of the concept of sustainable development, people gradually recognized it and eventually it became the common guiding ideology of 研究可持续旅游的著名学者巴特勒，早在1993年他出版的专著中对可持续旅游做过这样的定义：“可持续旅游是指一个地区的旅游开发和延续，以这样的方式和规模发展，即在无限长的时间内旅游开发不改变或降低环境质量(包括人文和自然的)以及处在这个环境中的人类活动和进程都能得以顺利地实现”。是什么意思？

With the evolvement of the concept of sustainable development, people gradually recognized it and eventually it became the common guiding ideology of the well-known scholar of sustainable tourism Butler, back in 1993 he published a monograph on sustainable tourism has done so definition: "Sustainabl

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With the evolvement of the concept of sustainable development, people gradually recognized it and eventually it became the common guiding ideology of studies the sustainable traveling renowned scholar Boteler, as early as to the sustainable traveling has made such definition in the monograph which 1

With the evolvement of the concept of sustainable development, people gradually recognized it and eventually it became the common guiding ideology of famous scholar Butler of sustainable tourism, Early in 1993 he published of monograph in the on may continued tourism do had such of defined: "may con