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Thomas Edison invents 'hello'!

Thomas Edison invents 'hello'!

Today is the 170th anniversary of the birth of one the world's most famous inventors, Thomas Edison. Edison came up with lots of great inventions and here he stumbles upon an important development in the way people answer the telephone.

bbc.co.uk2017年2月11日

Thomas Edison Inventions

Thomas Edison’s accomplishments go beyond the light bulb

Thomas Edison’s accomplishments go beyond the light bulb

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Thomas Edison Inventions

Thomas Edison Inventions

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6 Thomas Edison Inventions You Didn’t Know About

6 Thomas Edison Inventions You Didn’t Know About

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