“位于边界上的”可以翻译为“located on the boundary” 或 “situated on the border” 。例如：
The small village is located on the boundary between two countries.（这个小村庄位于两个国家的边界上。）
There's an old fort situated on the border of the region.（该地区边界上有一座古老的堡垒 。）