When you execute the code in Listing 4, the result is the atomic value of one node.
执行清单4的代码后，结果得到的是一个节点的原子值。
The result of an XPath expression is typically a selection of nodes from the input documents or an atomic value.
一个XPath表达式的结果通常是从输入文档选择出的节点或者是原子值。
In some situations where Backwards Compatibility mode is in effect, the first member of a sequence will be taken when an atomic value is needed.
在一些向后兼容方式有效的情况下，如果需要原子值，那么将选取序列的第一个成员。
The dot (.) is now known as the context item expression, and might be a node or an atomic value, depending on the current item in the sequence being processed.
点号(.)在这里称为上下文项表达式，可以是节点或者原子值，视处理的序列中的当前项而定。
When you want to create an atomic value of one of the time-oriented data types, use a type-constructor function and provide the string representation as an argument.
如果需要创建与时间相关的数据类型的单个值，可以使用类型构造器函数并提供时间的字符串表示形式作为参数。
This method is used to read, convert if necessary, and return atomic value items from the current node content.
此方法用于读取、转换（如果需要）和返回当前节点内容中的原子值项。
Subqueries are generally used to return a single row as an atomic value although they may be used to compare values against multiple rows with the IN keyword.
子查询一般用来返回一个单独的行作为原子值，然而还可以用来比较多行的值，利用IN关键字。
In fact, all expressions in XPath 2.0 and instructions in XSLT 2.0 evaluate to sequences, so that a single node or a single atomic value is really a sequence containing that one item.
实际上，XPath 2.0中所有的表达式和XLST 2.0中的指令都对序列求值，因此，单独的节点或者原子值实际上是包含一个项的序列。
Comparing a variable having an atomic value (number, Boolean, or string) to another such variable or a literal atomic value, and expecting the type of one to be cast automatically to the other type.
把包含原子值(数字、布尔值或字符串)的变量和另一个此类变量或者文字原子值比较，希望一种类型自动转换成另一种类型。
Comparing a variable having an atomic value (number, Boolean, or string) to another such variable or a literal atomic value, and expecting the type of one to be cast automatically to the other type.
把包含原子值(数字、布尔值或字符串)的变量和另一个此类变量或者文字原子值比较，希望一种类型自动转换成另一种类型。
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