拥有自己的网上“机器人”我们熟悉的搜索引擎如Ａｌｔａｖｉｓｔａ等之所以倍受表睐，就是因为它们有自己的网上机器人，整天为其搜索网页，更新内容。对普通网友来说，经常需要访问一些网址以获得最新内容，但常常发现连接进去并没有增添什么新内容，浪费了上网费用。笔... Own online “robot” We are familiar with search engines such as Altavista so much because we have their own web-based robot that searches for pages and updates throughout the day. For ordinary users, often need to visit some of the URL to get the latest content, but often find it connected without adding any new content, a waste of Internet access costs. pen...