George Washington Carver and Thomas Alva Edison were American scientists who were born during the nineteenth century.
乔治.华.卡佛和托马斯.阿尔瓦.爱迪生是
九世纪诞生的
国科学家。
George Washington Carver and Thomas Alva Edison were American scientists who were born during the nineteenth century.
乔治.华.卡佛和托马斯.阿尔瓦.爱迪生是
九世纪诞生的
国科学家。
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