urban decline的意思|示意

Our rural populations continue to decline while urban and suburban areas multiply in size.

我们的农村人口持续下降，而城市和郊区人口成倍增长。

Since then, much of the further decline may well have been the result of a lack of desire, in the case of urban couples especially, to have more than one child.

而自那以后，生育率的进一步滑坡可能更多需要归功于民众对多要一个孩子这件事并不那么感冒，在城市，这种现象尤其明显。

The decline was more marked in urban areas.

这一下降趋势在城市地区尤为明显。