第一个“非引用”子表达式只表示“查找类似于http或ftp或其它值的字符串”。
The first of these "non-reference" child subexpressions just says "match something that looks like HTTP or that looks like FTP or...".
表达式的其余部分用来检查值(去掉头尾的空格之后)是否是空字符串。
The rest of the expression is used to see if the value (without leading or trailing blanks) is an empty string.
这是包含被替换值替换了适当正则表达式匹配项的字符串。
This is the string that has the appropriate regular expressions matches replaced with the replacement value.
此例中显示了两种类型的用户属性：静态字符串，以及从入站消息中取得其值的XPath表达式。
In this example, two types of user property are shown: a static string, and an XPath expression that takes its value from the inbound message.
OrderDate的值是通过调用Bind表达式并向它传递GridView的关联数据源中列的名称和一个可选的数据格式字符串表达式来设置的。
The value for the OrderDate is set by calling the Bind expression and passing to it the name of the column in the GridView's associated data source and an optional data format string expression.
调用map可以遍历各个值，将其作为别名赋给v：val，在字符串中计算表达式，并用表达式结果替换值。
The call to map walks through each value, aliases it to v: val, evaluates the expression in the string, and replaces the value with the result of that expression.
一个值为包括空格的字符串的C表达式，代表定义包含已初始化的只读数据段的汇编程序操作符。
C expression whose value is a string, including spacing, containing the assembler operation to identify the following data as read-only initialized data.
串的转换先计算所包括的表达式表的值，然后按照其结果类型所特定的规则转换其结果对象为字符串。
A string conversion evaluates the contained expression list and converts the resulting object into a string according to rules specific to its type.
返回在另外一个指定的多维数据集上对字符串表达式求得的值。
Returns a value of a string expression evaluated over another specified cube.
实现一个简易计算器，计算简单表达式字符串的值。
Implement a basic calculator to evaluate a simple expression string.
返回一个布尔值，它指示在所搜索的字符串中是否存在正则表达式模式。
Returns a Boolean value that indicates whether a regular expression pattern exists in a searched string.
当在派生类中重写时，返回由表达式编辑器表属性值组成的表达式字符串。
When overridden in a derived class, returns the expression string that is formed by the expression editor sheet property values.
该表达式计算器支持具有“通过值传递”的参数的函数调用，但不支持具有“通过引用传递”的参数、对象、数组、函数和字符串的函数调用。
The expression evaluator supports function calls with By Value arguments but does not support function calls with By Reference arguments, objects, arrays, functions, and strings.
该表达式计算器支持具有“通过值传递”的参数的函数调用，但不支持具有“通过引用传递”的参数、对象、数组、函数和字符串的函数调用。
The expression evaluator supports function calls with By Value arguments but does not support function calls with By Reference arguments, objects, arrays, functions, and strings.
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