It matches a P element that is a descendant of an LI; the LI element must be the child of an OL element; the OL element must be a descendant of a DIV.
它匹配一个LI元素的后代P元素；而li必须是OL元素的子元素；而OL元素必须是DIV元素的后代。
2
The stock quotes widget loops through the items and appends a p element that contains two span elements into the div element identified by the id #quotes.
股票报价小部件会遍历结果项，将包含两个 span 元素的 p 元素附加到由 id #quotes 标识的 div 元素中。
3
Instead, realize that markup is all about providing this level of organization; a p indicates that text is in a paragraph, img denotes an image, div divides a page up into sections, and so forth.