解决这一矛盾，一方面要控制人口的数量，以减少食物总需求量；

In order to solve this problem, on the one hand we should control the quantities of population to reduce the aggregate demand;

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它作为控制人口数量过快增长的一项举措，实践证明在一定社会条件下是行之有效的。

As a measure to control the quick population growth, it has been practically effective under certain social condition.

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控制人口增长数量和提高人口素质，是中国人口政策的两个方面。

China's population policy has two objectives: control of population growth and improvement in quality of the population.

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