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 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。
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。
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。
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。
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。
In areas of high density it looks more or less like population density.
在高密度区域，它或多或少地看起来像是人口密度。
He would like to concentrate his citizens, boosting the population density in areas that are still economically viable, while encouraging people to move out of districts that are not.
他希望将他的市民都聚集起来，而不是鼓励人们离开这个地方，促进地区的人口密度在经济上依旧是可行的。
However, due to a considerable variation in land area, 1 population density and climatic, geological and topographical conditions, the extent of forest cover differs greatly among the island states.
然而，由于各岛屿国家的陆地面积、1人口密度、气候、地理地形条件等有很大差异，它们的森林覆盖程度也有很大差别。
I also recommend a visit to the Shanghai Museum of Urban Planning to anyone curious about population density, retail clusters or transportation infrastructure.
我还建议，对人口密度、零售集群或者交通基础设施感兴趣的人可以去上海城市规划馆参观。
The ability to divert water into small agricultural plots meant that the Hohokam could live in large agricultural communities of relatively high population density.
将水引到小块农业用地的能力意味着霍霍坎人可以以相对高密度人口进行大规模的农业生活。
The data resembles a heat map of population density in a given city at any point in time.
这些数据组成了一份给定任意时间给定城市人口密度的热度图。
Extreme weather events are also likely to have a more destructive effect in future decades, as population density increases due to reasons unrelated to climate change.
在未来几十年，因为与气候变化无关的原因使人口密度增加，极端气候事件可能更具破坏性。
There is a close correlation between population density and the number of fires in a given region.
一特定地区发生的火灾次数和该地区的人口密度密切相关。
But it might learn from Toronto, which emits 11.6 tonnes of carbon dioxide per person and is closer to Denver in climate and population density.
但是丹佛可以参考多伦多的做法，因为两座城市气候和人口密度更为相近，而多伦多的人均二氧化碳排放量只有11.6吨。
European scientists asked volunteers to estimate statistics like the population density of Switzerland. Each person got five guesses.
欧洲科学家们让志愿者们估计一些诸如瑞士人口密度的数据，每个人有五次猜测机会。
Three of the cases they studied found that the rise of West Nile virus in the U.S. corresponded to decreases in bird population density.
他们在研究过的三个案例中发现西尼罗河热在美国的的流行与鸟类种群密度的下降相关。
They found that brain size decreased as population density increased.
他们发现，大脑的尺寸随着人口密度的增长而减小。
This makes Malta the European country with the highest population density with 1,265 persons per square km.
这使马耳他成为欧洲人口密度最高的国家，每平方千米1,265人。
At the other end of the list are cities in Canada and the United States, which benefit from lower population density, favorable climates and stricter air pollution regulation.
污染最轻的是美国和加拿大的城市，原因是它们的人口密度低，气候怡人，并且空气污染管理规定非常严格。
Determining the location of photos also makes it possible to combine them with geographic data bases related to climate, population density, vegetation, topography and land use.
照片拍摄地的确定也使得将照片与天气，人口密度、植被、地形、土地等地理信息联系起来成为可能。
It's about population density.
这是个人口密度问题。
It also cites the country's high population density as a reason for these strict measures.
它还援引该国人口密度高为采取严格的措施的理由。
City dwellers’ emissions per person tend to be lower, and the more planners can do to increase population density the better.
城市居民人均二氧化碳释放量更低，规划师越能提高人口密度，效果就越好。
City dwellers’ emissions per person tend to be lower, and the more planners can do to increase population density the better.
城市居民人均二氧化碳释放量更低，规划师越能提高人口密度，效果就越好。
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