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frequent – adj. happening often
heat wave – n. a period of unusually hot weather.
access – n. a way of being able to use or get something
fan – n. a machine or device that is used to move the air and make people or things cooler
energy-efficient – adj. capable of reducing the amount of electrical energy needed to provide products and services
blackout – n. a period when lights are off because of an electrical power failure
