二楼的

Once a middle-aged man did that with the backmost room on the second floor.

次位中年男子租了二楼最靠里房。

Wait, can you check these sunglasses? I bought it in the second floor. I think they forgot to demagnetize it.

等下，您能看看这副太阳镜吗？我在二楼买。我想们忘了给它消磁了。