apartment的意思是“一套房间”,主要指一套公寓的房间,通常设有家具供出租,尤指为度假用的; 引申还可指“厅堂,殿堂”,作此解时,常用于复数形式。

There's a nine story apartment building next to the bank.银行旁边有一座九层高的宿舍大楼。
Many city dwellers live in apartment buildings.许多城市居民住在公共住宅楼里。
You can visit the whole palace except for the private apartments.整个宫殿都可以参观,只有内殿不开放。

apartment, dormitory, flat, room
参见flat条。

［同义词］   flat, set of rooms, suite