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1·The region has a very high population density.

这一地区人口密度很高。《柯林斯英汉双解大词典》

2·The population density of that country is 685 per square mile.

那个国家的人口密度为每平方英里685人。《新英汉大辞典》

3·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。

4·Newman notes that Portland has about the same population as Perth and had a similar population density at the time.

纽曼指出，波特兰的人口与珀斯大致相同，而且它们当时的人口密度相近。

5·County X and County Y have similar terrain, but the population density of County X is significantly higher than that of County Y.

X 县和 Y 县的地形相似，但 X 县的人口密度显著高于 Y 县。

6·The actual level of intensity depends on such factors as the physical layout, population density, and productive activities of a metropolis.

实际的强度水平取决于诸如大城市的物理布局、人口密度和生产活动之类的因素。

7·Medieval agriculture in northern Europe fed, clothed and sheltered a predominantly rural society with a much lower population density than it is today.

北欧的中世纪农业为主要的农村社会提供了食物、衣服和庇护，人口密度比今天低得多。

8·It's about population density.

这是个人口密度问题。

9·The map has color-coded indicators for population density.

这副地图上，不同的人口密度具有不同的有色指示符。

10·The increasing population density will even further congeal traffic.

日益增加的人口密度将使交通更加瘫痪。