That is, a visitor will have a .visit_FOO() and .depart_FOO() method for each type of node, rather than switching on type within large .startElement() and endElement() methods.
即，访问器会有针对每种类型节点的 .visit_FOO()和 .depart_FOO()方法，而不是在大型的.startElement() 和endElement() 方法中按类型进行切换。
Upon visiting our website, we assign each visitor a unique ID that is used to track visitor traffic patterns within our website.
当我们访问网站我们把每一个独特的游客身分就是用来跟踪网站访问量模式。
Upon visiting our website, we assign each visitor a unique ID that is used to track visitor traffic patterns within our website.
当我们访问网站我们把每一个独特的游客身分就是用来跟踪网站访问量模式。
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