英语翻译这是一个简易不插电手机投影仪,通过平面镜和放大镜的原理将手机上的画面放大到墙面上.尾部有不插电的扬声器,主要起到

This is an simple phone projector that does not require to be plugged in an electric outlet,using the principle of using mirror and biconvex lens to magnifying the image on the phone onto the wall.There is a speaker at the end that does not require to be plugged in an electric outlet as well,it's main purpose is to let multiple people to watch videos together.