市中心区

例句：

1. 1. The city center is the hub of the city's business district.
   市中心是城市商业区的中心。
2. 2. The central government is responsible for coordinating national policies.
   中央政府负责协调国家政策。
3. 3.The central bank controls the money supply in the country.
   中央银行控制着国家的货币供应。