她写这本书就是为了作者有权得到的那本免费样书。
She had written it for the single gratis copy of the book that an author was entitled to.
电子阅读器用户表示，手中的电子书有52%是自己购买的，48%是免费获得的：或是出版商赠送的样书，或是版权已经过期的书籍。
E-reader users also say that 52% of their e-books were ones they purchased, while 48% of their e-books were free because they were sample giveaways or out-of-copyright.
应用推荐