The region has a very high population density.
这一地区人口密度很高。
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。
They have never had a high population density.
他们从来没有过很高的人口密度。
The density of population in this city is very high.
这个城市的人口密度非常高。
This region has a high population density.
这个地区人口密度很大。
For one thing, no population can be driven entirely by density-independent factors all the time.
一方面，没有任何种群在所有的时间里完全只受“种群密度无关”因素的影响。
For one thing, no population can be driven entirely by density-independent factors all the time.
一方面，没有任何种群在所有的时间里完全只受“种群密度无关”因素的影响。
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