【人気ダウンロード！】 アレクサンダーグラハムベル 930913-アレキサンダーグラハムベル 伝記
名言を英語で読む（アレクサンダー・グラハム・ベル、トーマス・エジソン） Obey the law of Forced Efficiency Concentration, in its truest, unadulterated form, mean the ability to focus the mind on one single solitary thingBorn Alexander Bell, – ) was a Scottishborn inventor, scientist, and engineer who is credited with inventing and patenting the first practical telephoneHe also cofounded the American Telephone and Telegraph Company (AT&T) in 15 Bell's father, grandfather, and brother had all been associated with work onSee also Alexander Graham Bell on Wikipedia; エジソン アレキサンダーグラハムベル 伝記