<正>乔治·华盛顿·卡弗凭借农作物轮作技术闻名世界，帮农民实现了作物创收。1 On January 5, 1945, the United States Congress voted to make every January 5 George Washington Carver Day. George Washington Carver became one of America’s greatest scientists in the field of agriculture.
科研之友
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