双层铺

例句：

1. 1. The house has two floors and a balcony.
   这栋房子有两个楼层和一个阳台。
2. 2. She bought a double bed for her son's room.
   她为儿子的房间买了一张双人床。
3. 3. They have double the number of employees as before.
   他们的员工数量是之前的两倍。