A lack of access to Cuba,says GAO, has made it difficult to obtain nationally representative data on audience size, and decision-makers have had limited information to assess the relative success or return on investment for each transmission method.

VOA: standard.2009.06.18

It is internet accessible so you can access it most anywhere anytime and you can also access tools and software and tricks that the staff have made available.

而且可以通过网络访问,所以无论何时何地都能访问,你们也可以访问这些工具啊，软件啊，还有一些,授权访问的小诀窍。

哈佛公开课 - 计算机科学课程节选