Combination of cultural and natural elements, for instance in biosphere reserves, should be provided to tourists in the form of properly managed "ecotourism".
文化和自然因素的结合，比如在生物圈保存中，应该以生态旅游的方式来向游客们介绍。
Combination of cultural and natural elements, for instance in biosphere reserves, should be provided to tourists in the form of properly managed "ecotourism".
文化和自然因素的结合，比如在生物圈保存中，应该以生态旅游的方式来向游客们介绍。
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