Alexander Bell is considered to have invented the telephone.

人们认为亚历山大·贝尔发明了电话。

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Alexander Graham Bell believed one day machines would be invented to help deaf people hear and speak.

VOA: special.2010.05.14

The Philadelphia exhibition also included Alexander Graham Bell's telephone, Heinz ketchup and the Remington typewriter.

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That moment is famous. Alexander Graham Bell was in one room.

VOA: special.2010.05.14

John Tyndall, an English experimenter, demonstrated one before Alexander Graham Bell invented the telephone.

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In 1874, Alexander Graham Bell spent the summer with his parents in Brantford, Ontario.

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Also identified was the voice of Alexander Melville Bell, the inventor's father, in a recording from 1881.

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