An upstairs room or object is situated on a floor of a building that is higher than the ground floor.
Marsani moved into the upstairs flat.
玛萨妮搬进了楼上的公寓。
If you go upstairs in a building, you go up a staircase towards a higher floor.
He went upstairs and changed into clean clothes.
他上楼换了干净的衣裳。
If something or someone is upstairs in a building, they are on a floor that is higher than the ground floor.
The restaurant is upstairs and consists of a large, open room.
餐馆在楼上,是一个宽敞的大开间。
The upstairs of a building is the floor or floors that are higher than the ground floor.
Together we went through the upstairs.
我们一起走过上面各楼层。