insulated
[adjective]
covered with a substance that does not let heat, electricity, or sound to enter or escape through it
self-sufficient
[adjective]
capable of providing everything that one needs, particularly food, without any help from others
sound wave
[noun]
a type of wave that travels through a medium like air or water and carries sound from one place to another
tree house
[noun]
an enclosed structure built among the branches of a tree to provide children with a place to play in
motorhome
[noun]
a type of recreational vehicle that is designed for long-distance travel and can function as a temporary home on wheels
hillside
[noun]
a sloping surface or area of land that forms the side of a hill or mountain
bunk bed
[noun]
a piece of furniture consisting of two small beds with one built above the other
staircase
[noun]
a set of stairs inside a building including its surrounding side parts that one can hold on to
DVD player
[noun]
a device that plays content such as movies or shows from flat discs called DVDs on your TV or other display
mobile phone
[noun]
a cellular phone or cell phone; a phone without any wires and with access to a cellular radio system that we can carry with us and use anywhere
air conditioning
[noun]
a system that controls the temperature and humidity in a house, car, etc.
fish tank
[noun]
a container, typically made of glass or acrylic, used for keeping and displaying fish and other aquatic animals
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