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美国各地中小学校即将开学。饱受财政赤字之苦的加州,为了节省新会计年度的教育经费,决定从新学期开始逐步推出电子版教科书,以减
Primary and secondary schools across the United States are about to begin. In order to save money on education for the new fiscal year, California, suffering from the financial deficit, decided to gradually introduce an electronic textbook from the beginning of the new semester to reduce