This means that XQuery consists of several kinds of expressions, such as path expressions, conditional expressions, and element constructors, that can be composed with full generality.
这就意味着XQuery是由多种表达式构成的，如路径表达式、条件表达式以及元素构造函数，是完全通用的。
This article focuses on two important kinds of XQuery expressions: FLWOR expressions and path expressions.
本文主要讨论两种重要的XQuery表达式：“FLWOR”表达式和路径表达式。
Since expressions are not covered in the digital signature, it is important to verify that expressions aren't harmful, and that the code behind functions that are called by expressions is safe.
因为数字签名没有覆盖表达式，所以验证表达式无害，并且其调用的函数代码是安全的将非常重要。
Since expressions are not covered in the digital signature, it is important to verify that expressions aren't harmful, and that the code behind functions that are called by expressions is safe.
因为数字签名没有覆盖表达式，所以验证表达式无害，并且其调用的函数代码是安全的将非常重要。
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