从人手开开关关的原始电灯,到五花八门的感应灯,人们乐于接受已成了习惯。比如我们单元楼梯上的声控感应灯,你晚上回家上楼梯,看不见,楼梯不好走,这时,你不用手电,也不用去找楼梯灯的开关,跺下脚,或拍拍手,或发出一个暴破力较强的声音,灯就亮了,你回家了,那灯也就自己关了。方便吧,正常吧,生活很美好吧。 It is customary for people to be receptive to the primitive lights that switch on and off from a man’s hand to a wide variety of sensors. For example, the sound-control lights on the stairs of our unit go back up the stairs at night, you can not see the stairs, and the stairs do not go well. At this moment, you do not have to use the flashlight or switch to the stairs light, A strong, violent voice lights up, and you go home, and the light is off. Convenient, normal, life is beautiful.