George Washington Carver and Thomas Alva Edison were American scientists who were born during the nineteenth century.
乔治.华盛顿.卡佛和托马斯.阿
.
迪
是
九世纪

美国科学家。
George Washington Carver and Thomas Alva Edison were American scientists who were born during the nineteenth century.
乔治.华盛顿.卡佛和托马斯.阿
.
迪
是
九世纪

美国科学家。
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