居住人口密度 ( Density of registered inhabitants )，在中国，指居住区、居住小区或住宅组团中，单位面积内持有正式户口的居住人口数。
如果曼哈顿的人口密度也和这里的一样的话，那里只有16个人居住。
If Manhattan had the same population density, there would be only 16 people living there.
通过提供住房券帮助家庭搬出经济贫困的居住区，从而降低贫困人口密度的项目。
programmes to reduce concentrations of poverty through the provision of housing vouchers to help families move out of economically deprived neighbourhoods.
加拿大是世界上人口密度最低的地区之一，因为其广阔的北方森林地区实际上无人居住。
Because of its vast tracts of virtually uninhabited northern forest, Canada has one of the lowest population density in the world.
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