Famous American inventor Thomas Alva Edison was a master of developing ideas into commercial successes and died a rich and powerful man after a long prolific life.

著名的美国发明家托马斯·阿尔瓦·爱迪生就是将设想开发成商业成果的大师。他度过了富有创造力的漫长的一生，死时是一位富有而有权威的人。

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Another improvement, by the famed inventor Thomas Alva Edison (1847-1931) in 1874, was the Quadruplex system, which allowed for four messages to be transmitted simultaneously using the same wire.

另一项技术进步——四路系统，由著名发明家托马斯·阿尔瓦·爱迪生(Thomas Alva Edison, 1847 - 1931)于1874年发明，它可以使四条信息在同一条电报线上同时传送。

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Thomas Alva Edison was a great American inventor. When he was a child.

托马斯·阿尔瓦·爱迪生是美国的一位伟大的发明家。小时候。

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