There has been a progressive decrease in population every year in this city.
这个城市的人口在逐年递减。
There has been a steady decrease in population in this city.
这个城市的人口在不断减少。
There has been a steady decrease in population in this city.
这个城市的人口在持续下降。
The population began to decrease in some countries.
人口开始在某些国家下降。
The population began to decrease in some countries.
人口开始在某些国家下降。
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