The Internet search company is putting books online that are no longer protected by copyright.

VOA: special.2009.07.24

Amazon, everybody buys books online now.

现在人人都在网上买书。

美国的出版市场 - SpeakingMax英语口语达人

E-books are quite cheaper online than hardcopy books so,

在线电子书比纸质书便宜不少，

音乐市场的变化 - SpeakingMax英语口语达人