urban core

例句：

1. 1.The urban core is where the city's most important businesses and institutions are located.
   城市核心是城市最重要的企业和机构所在地。
2. 2. The urban core is a hub of activity, with many shops, restaurants, and entertainment venues.
   城市核心是一个活动中心，有许多商店、餐馆和娱乐场所。
3. 3. The urban core is often characterized by its tall buildings and busy streets.
   城市核心通常以高耸的建筑物和繁忙的街道为特征。