At present, we have a modern invention. The invention is different from the modern inventions artifacts, such as old
modern, air, and old artifacts, such as Fan
.The invention is created from the prosperity of science and the development of technology to meet the needs of the human
.Go back to the past, we have the fan is a device that allows a cooling and relieve the heat which is different from the present. Because we use a device allows air cooling. And from time to time in the modern era.The invention and the popularity he more and more!The modern invention has both advantages and disadvantages. Such as the advantages of air conditioning is able to reduce and improve the room temperature according to our requirements, but the disadvantage is causing wastage of resources,Make charge of electricity home increased. And no human body conditioning to get used to the weather outside the room square.
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