...Keep the user oriented: Display theprevious location and guide users to their next one. Remind users where they'vebeen by programming links to change color after being visited. 以用户为导向：显示前一个浏览位置，引导用户进入下一个。通过编程实现的在浏览后改变颜色的链接提醒用户已经访问过哪些地方。
基于1个网页-相关网页
以用户为导向的信息服务是目前提高信息服务水平的关键。
User-oriented information services are the key of currently raising the information services level.
以用户为导向：显示前一个浏览位置，并引导用户进入下一个。
Keep the user oriented: Display the previous location and guide users to their next one.
论文以用户为导向构建层次分析模型，借此对搜索引擎的评价作简要探讨。
According to the users' direction, the paper constructs the hierarchy analyzing model to discuss the evaluation of search engine.
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