Google, Microsoft and Yahoo are spending vast sums of capital to build out their computing capabilities to run both search engines and a variety of Web services that encompass e-mail, video and music downloads and online commerce.

• 微软和雅虎公司都在花费巨资提高自身的计算能力以便在搜索引擎和其他各种网络服务领域参与竞争，网络服务包括电子邮件、视频和音乐下载以及电子商务等。