从第一台电风扇诞生开始,人类就离不开它了,尤其是在炎热的季节里。电风扇解放了人类的双手,人们不需要自己费力,就能享受到风的清凉了。不过,它的便利似乎也给一些人带来了新的困扰。我曾看过、听过不少这样的争吵:“电风扇该对着头吹,还是对着脚吹?”坚持对头吹的人认为:头怕热,当然是对着头。持反对意见的人则 From the birth of the first electric fan, humans can not do without it, especially in the hot season. Fans liberated human hands, people do not need their own effort, you can enjoy the cool wind. However, its facilitation also seems to have brought new problems to some. I have seen, I heard a lot of such quarrel: “Fan should blow toward the head, or toward the foot blowing?” Insisted on the head blowing people think: afraid of heat, of course, is a head start. Opponents of the people