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篮球是一种很受欢迎的运动。它是1891年由一个叫奈史密斯的美国人所发明的。当时奈史密斯是美国麻州春田国际青年会训练学校的体育老师,这个学校的体育系主任要求他发明一种
Basketball is a popular sport. It was invented in 1891 by an American named Naismith. At that time, Naismith was a PE teacher at the Chun Tian International Youth Training School in Massachusetts. The director of the department of physical education demanded that he invent a