据美国出版商协会统计，仅仅一年之前精装书的销量还是电子书的三倍，但现在亚马逊售出的电子书拷贝要多于纸质书。
Just a year earlier hardbacks had been worth more than three times as much as e-books, according to the Association of American Publishers. Amazon now sells more copies of e-books than paper books.
根据美国出版商协会的研究报告显示，电子书2月销售额总计9千零三十万，与上年同月相比，上涨了202个百分点。
E-book sales totaled $90.3 million in February, up 202% compared to the same month a year earlier, according to a study from the Association of American Publishers.
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