Edison began his career as an inventor in Newark, New Jersey, with the automatic repeater and his other improved telegraphic devices, but the invention that first gained him wider notice was the phonograph in 1877.
At age sixteen, Edison made his first invention, which was called an "automatic repeater."
At age sixteen, Edison made his first invention, which was called an "automatic repeater."
간단한 표현 사용: Edison began his career as an inventor in Newark, New Jersey, with the automatic repeater and his other improved telegraphic devices, but the invention that first gained him wider notice was the phonograph in 1877. 산출: