Currently , the energy ' s development and usage are facing the bigness pressure in the economy increase and the environmental protection , making use of the energy validly and reasonably has became the sustainable development ' s crux in our country 目前我国能源的开发利用面临着经济增长和环境保护的双重巨大压力，合理有效的利用能源已成为我国可持续发展的关键。
Difficulty of poverty eradication , increase of migrants to urban areas and resettlement of people has broken up with original management system and traditional social economy structure as well as stability and population policies 中国作为世界上人口最多的发展中国家，人口问题将在未来较长时间内成为制约我国经济、社会协调发展和可持续发展的关键因素和首要问题。
The full global integration of china ' s financial sector and the enforcement of protection of intellectual property rights are also believed to be crucial factors contributing to the long - term and sustainable growth of the two countries ' economies , the chamber noted 美国商会表明：中国金融体系全面全球化，加强对知识产权的保护也是中美两国经济长期可持续发展的关键因素
Now because of the different nature in the village society , besides the systems and mechanism insurance , fostering more cultural peasants with the talents of joining and creating is the key to maintaining the sustain development of villages 眼下由于乡村社会有着较强的异质性，因此除了制度或机制上得到保障外，塑造出更多有参与和创造能力的农民即文化农民是乡村可持续发展的关键。
Meanwhile , the key to improving the science research strength of local average institutions of higher learning is to cooperate and exchange with the famous universities , unite the local economy , strengthen the special features , and form a science research group 同时，加强与名牌高校合作与交流，紧密结合地方经济，强化科研特色，培育一支优秀的科研团队是地方高校科研实力提升、实现可持续发展的关键。
Accordingly , human capital is the most important factor among all production factors for its special characteristics as a kind of human capital investment in enterprise , training is the main method to calculate human capital , gain competitive advantage and consistenable development 人力资本的存量是一国和一个企业可持续发展的关键。培训是企业进行人力资本投资的重要形式，是企业积累人力资本、赢得竞争优势和可持续发展的重要手段。
The original ideas of this article are : to enforce joint stock system in hohhot and let the dairy farmers go in the leading enterprises - yili and mengniu . in addition , this article believes that milk resource base is the origin and key point of the development of dairy industry 本文认为，奶源基地是奶业产业化的源头，是奶业能否长期、可持续发展的关键，奶源基地只有形成品牌，企业才能长盛不衰，农民才能持久致富，地方财政才能不断增收。
By focusing on urban transportation , especially on urban public transportation , the author argues that public transport shall be considered as a key factor in achieving a sustainable city development , and the transformation of traffic means , the application of modem information technology and especially the financing for urban public transport shall become more and more significant in policy making and rejuvenation of financing mechanism 摘要说明了?何要关注城市交通、特别是城市公共交通问题；论述了公共交通是实现城市可持续发展的关键因素；探讨了城市交通如何实现向可持续发展交通方式的转变，包括现代信息技术的应用；研究了城市公共交通项目的融资问题。
On the basis of brief reviewing the progress of the researches about the relative fields at home and abroad , the system of economic sustainable development of huangling county was qualitatively analyzed in the thesis according to the life - cycle theory of products and industries , the theory of export guiding and the theory of economic sustainable development . and the method of systematic dynamics was applied in programming and mockingly regulating the ec onomic sustainable development of huangling , the best model for the economic sustainable development of county regions was discussed . and pointed out that the key to realizing the economic sustainable development of county regions was to suitably adjust the industrial structure , to transform the single structure into the multiple - levels and diversified structure and then to realize the recreation and substitution of advantages by developing coal industry and some non - coal industries such as agriculture and tourism that possess the regional advantages 本论文在简要回顾国内外相关领域研究进展的基础上，依据产业和产品的生命周期理论、出口导向理论和经济可持续发展理论，对黄陵县域经济可持续发展系统进行定性分析，并运用系统动力学方法对其进行规划与模拟调控，探讨了县域经济可持续发展的最优模式，指出实现县域经济可持续发展的关键是适时进行产业结构调整，由单一的结构向多元化、多层次转变，通过发展煤炭产业和具有区域优势的农业、旅游等非煤产业实现优势再造和优势替代。
