名词
中文翻译：人口比例
同义词：
['population distribution', 'population density']
例句：
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1. The government is considering a new law to regulate the population ratio in the city.
政府正在考虑一项新法律来调控该市的人口比例。
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2. The population ratio of the country has been increasing steadily for several years.
该国的人口比例在过去几年里一直在稳步上升。
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3. The researchers found that the population ratio of different ethnic groups was quite diverse.
研究人员发现不同种族群体的人口比例相当多样化。