In general, downtown areas just don't have that many residential areas; not that many people live there.

一般来说，市中心就是没有那么多居民区；没有那么多人住在那里。

Business owners in the city centers or the downtown areas have experienced some financial losses, because of a steady movement of people out of the cities and into the suburbs.

由于人口不断从城市向郊区迁移，市中心或商业区的企业主经历了一些经济损失。

Speeding in downtown areas violates traffic regulations.

在商业区疾驶违反交通法规。