人口结构的变化有助于创造一个良性的增长循环。
These demographic changes help to create a virtuous circle of growth.
而匮乏的主要诱因是水及食物短缺、人口结构变化和国家政策的失败。
The main problems of scarcity are water and food shortages, demographic change and state failure.
而匮乏的主要诱因是水及食物短缺、人口结构变化和国家政策的失败。
The main problems of scarcity are water and food shortages, demographic change and state failure.
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