natural obstacle

基本解释

Urbanization is the only way for developing in the area of northwest China, but the most important natural obstacle is serious shortage of water resource.
城镇化是西北地区发展的必由之路，然而最大的自然障碍因素是水资源严重短缺。
Urbanization is the only way to get to the comparatively-comfortable level in arid area of northwest China, but the most important natural obstacle is serious shortage of water resource.
城市化是西北干旱区实现小康目标的必由之路，然而最大的自然障碍因素是水资源严重短缺。
But the United States as a vested interest state in the reform is the natural obstacle of the reform.
然而美国作为既得利益者，自然对体系的改革百般阻挠。

The time is now for Congress to fix this departure from economic transparency and what could be seen as an impertinent obstacle to the freedom of choice and our natural compulsion to improve our lives.
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