Searching for concepts instead of or in addition to keywords is a powerful means to improve efficiency and usability of enterprise search solutions.
除了搜索关键字之外，还能够搜索概念，这对于改进企业搜索解决方案的效率和易用性非常有意义。
You can read articles that talk about how rich Internet applications help users and the usability of search forms.
有的文章在讨论富网络应用对用户的帮助和搜索表单的可用性设计。
In these cases, information-system usability is directly influenced by a user's ability to track along a search trail.
在这些情况下，用户沿搜索线索跟踪的能力会直接影响到信息系统的可用性。
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