| Many e-books are already selling for ninety-nine cents. 许多电子书售价已经是 99 美分。 Books printed on paper are easily shared and resold by anyone. 纸质书容易与人共享并转售。 But e-books can act more like computer software licensed only to the user who buys them. 而电子书类似于电脑软件，仅许可给购买它们的用户。 And some Kindle users got a shock last week. 上周，一些 Kindle 阅读器用户吃惊地发现： They were surprised to find that copies of two books disappeared from their devices. 他们阅读器里的两本电子书消失了； |
