The shopping mall is located in the tri-state area, attracting customers from all directions.

tri-state 是由前缀 tri-（表示“三”）和名词 state（州）组成的复合词，字面意思是“三个州的”。 tri-state area 指三个州的交界地区，通常用来描述位于多个州边界附近的区域。