自然环境恶劣固然是贫穷的原因，而劳动力素质的低下则是落后与贫穷的根源。
Though the adverse natural resources are the cause of poverty and backwardness, the low labor quality is the root.
本文论述了安塞油田主要特点是：低渗、低压、低产，自然环境恶劣，油田地工程建设难度大。
Ansai oil field is characterized by low Permeability, low pressure, low output and adverse natural conditions, so surface engineering construction of Ansal oil field has great difficulty.
本文选择自然环境恶劣的石漠化地区的环境卫生作为研究对象，以求在田野调查点上有所突破。
In this paper, the author choice the karst rocky desertification areas as a research object, in the field investigation points to make some breakthroughs.
本文选择自然环境恶劣的石漠化地区的环境卫生作为研究对象，以求在田野调查点上有所突破。
In this paper, the author choice the karst rocky desertification areas as a research object, in the field investigation points to make some breakthroughs.
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