The average population density of the world is 47 persons per square mile.
世界平均人口密度为每平方英里47人。
The estimated population is 15 million. The population density of Kazakhstan is among the lowest in the world, partly because the country includes large areas of inhospitable terrain.
哈萨克斯坦有1500万人口，是世界人口密度最低的国家之一，因为这个国家的国土包括了广大的荒芜地区。
Because of its vast tracts of virtually uninhabited northern forest, Canada has one of the lowest population density in the world.
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。
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