Life is a process of constant struggle, at each stage, all of us should give oneself an aim, strive for the realization of their goals, perseverance. When implemented a target, we don't stop, content with the status quo, but should pay hard sweat for the next goal, in this way, we will progress the final success.追问
爱迪生的重大发明有哪些?举五项代表性的
用英文翻译
追答
What are Edison's inventions have? For the five representative