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The second is to gain the knowledge and experience to maintain humans within equilibrium in a closed ecological system. 其二是获得了在封闭的生态系统中维持人类生存和生态平衡的知识和经验。
The regional ecological system is fragile. 区域生态系统脆弱。
The protection of the ecological system was further enhanced. 生态环境保护力度加大。
There is a close relationship between vegetation and soil, which affect and interact each other in ecological system. 摘要植被和土壤在生态系统中相互影响、相互作用。
Economic Growth and Ecological System: Balance or Both Winning? 经济发展与生态维护:权衡抑或双赢?
closed ecological system 闭合生态系统,封闭的生态系统,密闭生态系统,闭路生态学系统
Closed Ecological Support System 闭合生态生命保障系统
The tourist ecological system which has reached the acme of perfection sufficiently presents the coloring of life. 尽善尽美的旅游生态系统充分展现生活色彩。
Importance will be attached to the protection of the existing ecological system in wetlands and development of artificial wetland as appropriate. 重视保护现有湿地生态系统，在适宜地区建设人工湿地。
The complex and varied terrains and landforms as well as the unique type of ecological system have created a natural paradise for biodiversity. 复杂多样的地形地貌和特殊的生态系统类型，为生物多样性营造了天然乐园。
Of the ten national-level and provincial-level nature reserves, most belong to the primeval forest ecological system. 还有十多个国家级和省级的自然保护区，其中不少是原始森林生态系统。
The subsistent human beings in actuality are those who are experiencing life in an ecological system. 现实生存的人是在生态系统中从事着生命体验活动的人。
But the truth is that it is energy that makes the world go round. Energy is the currency of the ecological system. 但事实上,是能量驱使世界运转。能量是生态系统的媒介。
Wetlands are critical to any ecological system, but particularly one which is as extensive and diverse as the Mekong River Basin. 湿地是不可或缺的生态系统，尤其是广泛富饶的湄公河流域。
The ecology system will be broken if too many trees were felled. 过度砍伐树木会破坏生态系统。
The tourist ecological system which has reached the acme of perfection.sufficiently presents the coloring of life. 尽善尽美的旅游生态系统充分展现生活色彩。
Abounding in resources of wetland ecological system, east Dongting Lake enjoys a promising prospect of eco-tourism. 东洞庭湖湿地生态系统资源丰富,开展生态旅游前景广阔。
Penguins play a key role in linking the ecological system of land, freshwater, tideland and ocean. 企鹅在联系南极陆地、淡水、潮间带和海洋生态系统上起到了关键的作用：它们在陆地繁殖和栖息；
The deforestation of rainforests will greatly upset ecological systems. 热带雨林植物的毁灭将对生态系统造成严重影响。
Urban forestry takes serving urban ecological system and maintaining its good operation as purpose. 摘要城市林业以服务城市生态系统，并保持其良好运行为主旨。