By the time of his death in 1931, Edison had been described by a German historian, Emil Ludwig, as “the greatest living benefactor of mankind”.
到爱迪生去世的1931年为止，德国历史学家埃米路德维格称他是“人类最伟大的活着的恩人”。
By the time of his death in 1931, Edison had been described by a German historian, Emil Ludwig, as “the greatest living benefactor of mankind”.
到爱迪生去世的1931年为止，德国历史学家埃米路德维格称他是“人类最伟大的活着的恩人”。
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