求翻译：本文通过查找收集分析旅游产品的相关文献资料，从观光旅游产品，度假旅游产品，专项旅游产品，生态旅游产品四个方面论述了其发展现状及存在问题，从而提出我们大学生毕业旅游论题的可行性和必要性。是什么意思？

This collection and analysis of tourism products by finding the relevant literature, from the tourism products, travel products, special tourism products, eco-tourism product development in four aspects of their situation and problems, and recommend topics we travel the feasibility of university gra

This article by locating collection and analysis of relevant literature, tourism products from tourism products, holiday tourism products, specialized travel products, eco-tourism product in 4 months on its development status and there are problems, so as to make our university graduates the feasibi

This article through the search collection analysis traveling product related literature material, from the sightseeing traveling product, takes vacation the traveling product, the special interest tourism product, the eco-tourism product four aspects elaborated its development present situation and

This article by looking for documents related to information collection and analysis of tourism products, tourism products, holiday, special tourism products, eco-tourism product discussed four aspects of their current situation and existing problems so that our graduates the feasibility and necessi

This text collects the relevant documents and materials which analyzes the travelling products by looking for, from visiting the travelling products, the travelling products for holidays, the special travelling products, ecological travelling products four respects have described their current situa