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the fact or presence of water covering a part of land that is typically dry
洪水, flooding
covered with a substance that does not let heat, electricity, or sound to enter or escape through it
绝缘的, 隔热的
capable of providing everything that one needs, particularly food, without any help from others
自给自足的, 独立的
a type of wave that travels through a medium like air or water and carries sound from one place to another
声波, 声波传播
an enclosed structure built among the branches of a tree to provide children with a place to play in
树屋, 树上房子
a type of recreational vehicle that is designed for long-distance travel and can function as a temporary home on wheels
房车, 露营车
a piece of furniture consisting of two small beds with one built above the other
双层床, 上下铺
a set of stairs inside a building including its surrounding side parts that one can hold on to
楼梯, 阶梯
a system that provides a building with warm water and temperature
中央供暖, 中央取暖系统
a device that plays content such as movies or shows from flat discs called DVDs on your TV or other display
DVD播放器, DVD播放机
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
手机, 移动电话
a system that controls the temperature and humidity in a house, car, etc.
空调, 空气调节系统
a container, typically made of glass or acrylic, used for keeping and displaying fish and other aquatic animals
鱼缸, 水族箱
