If you want to put something on the web there are three rules: first thing is that those HTTP names -- those things that start with "http:" -- we're using them not just for documents now, we're using them for things that the documents are about.
如果你想把什么东西放在网络，有三条规则 第一条规则是，需要有HTTP的名字 那些东西要以http：开头 我们现在不仅对文档这样用 对文档描述的事物也这样用