Xi'an is one of the few cities with city walls

Xi'an is one of the few cities with city walls

西安是少数有城墙的城市之一.

西安是少数城市的城墙

按理来说是“城墙”的意思

Xi'an is one of the few cities with city walls
这句话意思是：西安是有城市墙壁的少数个城市之一
city walls意思是：城市墙壁