To all the coal-fields and all the waterfalls Faraday had directly hitched the wheels of industry. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
The application of the power of waterfalls to the generation of electricity is rapidly extending, and promises to become a great source of mechanical power in the future. 佚名.神奇的知识之书.