比较复杂的表达式是Atom表达式。
然而，调试器还可以接受比这更复杂的表达式。
The debugger can accept much more complex expressions than that, however.
可以使用运算符组合表达式并创建复杂的表达式。
You can use operators to combine expressions and create complex expressions.
更复杂的表达式可包含变量、函数调用和其他表达式。
Expressions that are more complicated can contain variables, function calls, and other expressions.
运算符将简单的表达式组合在一起构成更复杂的表达式。
Operators combine simple expressions to compose more complex expressions.
基本搜索允许您使用+和-，但不能使用布尔运算符或更复杂的表达式。
Basic Search allows you to use + and - but you can not use Boolean operators or more complex expressions.
子表达式运营商。在与布尔运算符用于创建更复杂的表达式。
Subexpression operators. Used in conjunction with boolean operators to create more complex expressions.
但是对于复杂的表达式，特别是在应用程序中频繁使用的表达式，编译可以极大地改善性能。
But, for complex expressions, and especially for expressions that are frequently used in your application, compilation can offer dramatic performance increases.
编译器在它的第二遍扫描中用完了动态内存空间，可能是由于某个程序有太多的符号或复杂的表达式。
The compiler ran out of dynamic memory space during its second pass, probably due to a program with too many symbols or complex expressions.
像上面一样的表达式应该避免。当有歧义时，将一个复杂的表达式分解成多个陈述以保证赋值的顺序是正确的。
Expressions like the one above must be avoided. When in doubt, break a large expression into multiple statements to ensure that the order of evaluation is correct.
键之间的连接行已经没有了，因为现在关系已经是一个复杂的表达式，而不是在查询主题之间连接项目那么简单。
The link line is no longer there between the keys since the relationship is now a complex expression that goes beyond linking items from one query subject to another.
虽然小聪明可以处理一些非常复杂的表达式和语法，它是一个经验，以保持最低限度的模板语法和介绍侧重好的规则。
Although Smarty can handle some very complex expressions and syntax, it is a good rule of thumb to keep the template syntax minimal and focused on presentation.
但是，这里经常有人提问这样一个问题：如何编写查询表达式才能从任何复杂的DOM中获取正确的节点？
It is here, though, that a common question is asked: How do you write the query expression to get the correct node from an arbitrarily complex DOM?
首先，获得所有与一看起来非常复杂的正则表达式匹配的结果。
First, get all the matches with a regular expression that look pretty complex.
坦白地说，XML不是一种多么复杂的语法，因此认为可以自己通过正则表达式或其他特殊方法来解析的想法是可以理解的。
Granted, XML is not a very complex syntax so you can be forgiven for thinking that you can hack your way with regular expressions or other ad-hoc means.
初始查询中的XMLEXISTS谓词被转换为一个复杂表达式，可以通过编号Q 1引用。
The XMLEXISTS predicate in the original query got converted into a complex expression that can be referred to using the number Q1.
您可以连接表1中显示的元素(以及其他操作符)并加以组合使用，从而构建(非常)复杂的正则表达式。
You can string together the primitives in Table 1 (and other operators) and use them in combination to build (very) complex regular expressions.
但不幸的是，简单的正则表达式并不满足于处理复杂的模式和符号。
Unfortunately, simple regular expressions are unable to cope with complex patterns and symbols.
提供变量、表达式和控制流，以促进更复杂的决策制定。
Supplies variables, expressions, and control flow to facilitate more complicated decision making.
规则表达式搜索满足(尽可能复杂)的模式。
Regular expression searches match on (possibly complex) patterns.
在清单5中，Condition元素是用于创建作为可嵌套条件的复杂逻辑表达式。
In Listing 5, the condition element is used to create complex logical expressions as conditions can be nested.
如果需要执行更为复杂的XPath表达式且需要对文档进行完全控制，那么就可以选用DOM。
If you need to perform more complex XPath expressions and need full control of the document, DOM is an option.
此外，在InternetExplorer7和Internet Explorer 8中运行具有多个复杂Xpath表达式的测试用例可能会太慢了。
Additionally, it might be too slow to run test cases that have multiple, complicated Xpath - expressions in Internet Explorer 7 and Internet Explorer 8.
tcpdump和tcpflow工具有大量的选项，包括创建复杂过滤表达式的能力。
The tcpdump and tcpflow tools give you a huge number of options, including the ability to create complex filter expressions.
让我们忽略较复杂的选项，只关注正则表达式的基本语法。
Let's ignore the more complex options and just look at the basic syntax of a regular expression. Here are some examples.
不过，与复杂的XML文档打过交道的人都知道，详细的XQuery表达式很容易变得笨拙而难以理解。
However, anyone who works with complex XML documents inevitably finds that detailed XQuery expressions can quickly become awkward and hard to understand.
表达式可以简单到就是一个变量（如清单2 所示）或者是一个方法调用（例如getList()），亦或是包含布尔逻辑或三目运算符的复杂表达式。
This expression can be as simple as a variable (as shown in Listing 2) or a method call (like getList()), or a complex expression that involves boolean logic or a ternary operator.
本文不介绍用于动态选择Web服务的其他选项(例如确定最低执行成本或最佳质量的复杂表达式)。
Other options for dynamically selecting Web services (such as complex expressions that determine least execution cost or the best quality) are not covered here.
但是，实践证明对于很长的正则表达式这样太复杂了（很难确定group元素与正则表达式的关系）。
However, this proved too complex with long regexes (it was difficult to decide how the group elements related to the regex).
但是，实践证明对于很长的正则表达式这样太复杂了（很难确定group元素与正则表达式的关系）。
However, this proved too complex with long regexes (it was difficult to decide how the group elements related to the regex).
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