And second, of course, is the notion of a worldwide web of information, a system that brings every bit of news and data and discovery right to your door.

第二点当然就是全球范围的信息网络，正是这一体系将所有新闻、数据、新发现直接呈现给你。

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This, of course, contradicts all experience of the last 30 years, in which user experience's importance in system development has steadily increased as we moved from mainframes to PCs to the Web.

但是，在这三十多年来，我们已经明白使用者经验对系统开发的重要性日渐增加，并且我们也由大型系统为主变成以网际网路应用服务为主。

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The design of navigation system is the most important process in developing web base course , and the navigation system is the critical estimated part in webbased course too.

导航系统是网络课程设计的重要环节，是评价网络课程的重要指标。

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The Manhattan Virtual Classroom is a web-based course management system that includes a variety of discussion groups, live chat, areas for the teacher to post the syllabus and other handouts and notices, a module for organizing online assignments, a grades module, a surveys module, and a unique, web-based email system open only to students in the class.

UNESCO: Free and Open Source Software for E-learning

While these students will, no doubt, receive the email reminder they should also, in this new socially connected business, be able to view the course and their classmates on a self-service web portal that draws on the data from the HR system.

FORBES: HR Starts With Communications And Collaboration