Since it's an end unit, there's only one common wall.

由于它是终端单元，因此只有一面公共墙。

Sam says, " Since it's an end unit (meaning it's at the edge of the building – there isn't another apartment on the other side), there's only one common wall." A " common wall" is a wall that you share with another apartment.

萨姆说：“由于它是一个末端单元（意味着它位于建筑物的边缘 - 另一侧没有另一套公寓），因此只有一堵公共墙。 ” “公共墙” 是您与另一间公寓共用的墙。