How would you use a radio or a telephone if you had no electricity or batteries? These1bothered (使烦恼) British inventor Trevor Baylis. So in 1996 he2a wind-up (装有发条的) radio. It doesn't need electricity or batteries. You wind it up3hand. It plays for about an hour. Then, you wind it up4.
Baylis also invented a mobile phone that is powered by5. The shoes contain (含有) a small battery that is powered when you6. This battery is connected to a mobile phone. These two simple inventions can bring modern7to all parts of the world.
Baylis didn't have a university degree in engineering. In8, he left high school before graduating (毕业). He just loved9things to help people. He never knew10ideas would come to him. The idea for the phone came to him in a dream.
