a passage that is inside a house or building with rooms on both side

走廊, 门厅
one of the many floors that are in a building

层, 楼
a series of steps connecting two floors of a building, particularly built inside a building

楼梯, 台阶
an opening like a door, gate, or passage that we can use to enter a building, room, etc.

入口, 进入
the part of a fence or wall outside a building that we can open and close to enter or leave a place

门, 大门
a special way used to exit a building, car, etc. when a problem happens

紧急出口, 安全出口
a structure like a wall, made of wire, wood, etc. that is placed around an area or a piece of land

栅栏, 围墙
an object or device that produces brightness, often an electronic item like a lamp

光, 灯
a service that is provided to the public, such as electricity, water, or gas, which is used in daily life

公用事业
a source of power used for lighting, heating, and operating machines

电
a flammable gas used mainly as a fuel

气体, 可燃气体
the method or system used to warm a building and keep it comfortable inside, such as central heating, radiators, etc.

暖气, 热
a system of transmitting television waves by using underground wires

电缆, 有线电视
