fan is a device for producing a current of air by the movement of a broad surface or a number of such surfaces. fan helps to cool down the air--------------------------------------Oven is used to bake cakesOver is a cooking appliance---------------------------------------------Refridgerator helps to preserve the food.Refridgerator helps to prevent the food from being spoiled.------------------------------------------------Computer helps to broden our horizenComputer allows people to interact with one another more easily.
末末很烦躁
