Listing 19 USES Zorba to read this file and add a new entry to the end using an XQuery Update expression.
清单19使用Zorba读取该文件，并使用XQuery Update表达式在末尾添加一个新条目。
The query expression for this is swimmer/entry.
此导航的查询表达式为 swimmer/entry。
The line feed\"entry" is an XPath-like expression.
feed\"entry" 行是一个类 XPath 表达式。
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