George Washington Carver and Thomas Alva Edison were American scientists who were born during the nineteenth century.
乔治.华盛顿.卡马斯.阿尔瓦.爱迪生是九世纪诞生的美国科。
George Washington Carver and Thomas Alva Edison were American scientists who were born during the nineteenth century.
乔治.华盛顿.卡马斯.阿尔瓦.爱迪生是九世纪诞生的美国科。
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