duplexes
n. 连栋式的两栋住宅( duplex的名词复数 ); 联式房屋; 占两层楼的公寓套房; 复式住宅
A duplex is a house which has been divided into two separate units for two different families or groups of people.
A duplex or a duplex apartment is a flat or apartment which has rooms on two floors.