| 1. | Environmental history and the origin of ecological crisis
环境历史和生态危机的起源 |
| 2. | Find evidence on your site of its environmental history and ongoing natural processes
寻找研究点的环境历史和正在进行的自然进程的证据。 |
| 3. | Find evidence on your site of its environmental history and ongoing natural processes
寻找研究基地的环境历史和正在进行的自然进程的证据。 |
| 4. | Now the task is to find evidence on your site of its environmental history and ongoing natural processes
现在的任务是寻找研究点的环境历史和正在进行的自然进程的证据。 |
| 5. | Now the task is to find evidence on your site of its environmental history and ongoing natural processes
现在的任务是寻找研究基地的环境历史和正在进行的自然进程的证据。 |
| 6. | Mr martin is an expert in the history of britain ' s built environment . he uses it as a springboard to debate the often unwritten contribution of minorities to the national story
马丁先生是英国人造物质环境历史方面的专家。他以此为出发点探索常为文献付阙的少数民族对该国历史的贡献。 |
| 7. | In the four previous assignments , you identified a site and described why it interested you , explored your site ' s environmental history and observed ongoing natural processes , tracked changes on the site , over time , using a series of old maps , found traces of these changes in the present and reflected on their significance
在前面四份作业中，你选择了研究点，描述了为什麽让你感兴趣，探索了你研究基地的环境历史并观察了现行的自然进程，追踪基地随时间的变化，运用了一系列老地图，找到了这些变化在今天的遗迹，并思索了它们的意义。 |
| 8. | Because vegetation can show the situation of the environment , and is a credible sign of the present and history of the ecological environment and provides the information of the environmental change , so it can be used to predict the trend of the environment development . thus , it is important to find out the status of the vegetation in the source area of the yellow river for us to research into present ecological environment in the region and to discover the reasons and the countermeasures
由于植物对环境的指示具有很高的可靠性，它既能反映环境的现状，又能反映环境的历史，还能够提供环境历史变迁的信息，可用来预测环境的发展趋势，所以查明黄河源区植被状况对于调查黄河源区生态环境现状和查明黄河断流的原因，并找出对策有重要意义。 |
| 9. | In the four previous assignments , you identified a site and described why it interested you , explored your site ' s environmental history and observed ongoing natural processes , tracked changes on the site , over time , using a series of old maps , found traces of these changes in the present and reflected on their significance
在前面四份作业中，你选择了研究点，描述了为什么让你感兴趣，探索了你的研究点的环境历史和现行的自然进程，追踪研究点随时间的变化，运用了一系列老地图，找到了这些变化在今天的遗迹，并思索了它们的意义。 |
| 10. | The thesis starts with a retrospect of the theory origin of the recent and modern times " region and urban planning , and the related theories of ecology system and urban system ' s spatial arrangement . then it analyses the history evolvement of ningxia ' s eco - environment as well as the existing problems . on the premise of the understanding of the whole ningxia ' s eco - environment , it focuses on the eco - environment subarea of spatial development of ningxia ' s urban system and discusses the relationship between the urban ' s spatial arrangement and eco - environment
本文首先回顾了近、现代区域和城市规划的理论渊源、生态系统的相关理论及城镇体系空间布局的相关理论，进而对宁夏的生态环境历史演变与存在的问题进行了分析，在对宁夏整体生态环境认识的前提下，重点探讨了宁夏城镇体系空间发展的生态环境分区，并以此为基础，研究城镇空间布局与生态环境之间的关系，最后在明确城镇体系空间发展战略的基础上，提出了宁夏城镇体系空间布局的模式。 |
