For more information about valid expressions, see expressions in the Debugger.
有关有效表达式的更多信息，请参见调试器中的表达式。
Facial expressions aren't as important in live performances generally, because the choreographer knows that someone in the back row of a theater may not be able to see a dancer's face clearly.
面部表情在现场表演中通常不那么重要，因为编舞者知道坐在剧院后排的人可能看不清舞者的脸。
The frequency and order in which small parts may occur in larger parts is specified by operators — mostly the same symbols you see in regular expressions.
由运算符—通常和您在正则表达式中看到的符号相同—来指定小部件在较大的部件中出现的频率和顺序。
And I see those machines as just expressions of human creativity.
我把这些机器当作是人类表达创造力的途径。
The true power of the rewriting rules, though, shines when using regular expressions, as we'll see in this section.
但在使用正则表达式时，重写规则的真正功能才会发挥更大作用，本部分将对此进行探讨。
Online, there's no way to see facial expressions or read body language that provide context.
在网上，你没有办法看到他们发布内容时的面部表情或身体语言。
I lack the ability to see emotion in most facial expressions.
我很难能从人们的面部表情中辨别出他们的情绪。
Determining if a string matches a pattern is the simplest use of regular expressions and, as you see in Figure 1, it's, easy to do.
确定字符串是否与模式匹配是对正则表达式的最简单应用，如图1所示，而且易于操作。
It is agreeable to see our companions eat with a good appetite, and all expressions of loathing are offensive.
看到我们的同伴在津津有味地吃饭是令人感到愉悦的，这时候要是表现任何憎恶的表情都是令人不快的。
See the Variables and XPath expressions sidebar for a few more details.
有关一些详细信息，请参阅变量和XPath表达式侧栏。
These are attributes commonly associated with higher-level programming constructs, and we'll see how Perl 6's regular expressions address these three problems.
这些属性通常与高层次编程结构有关，我们将看到Perl6正则表达式如何解决这三个问题。
As you can see in the previous examples, it is fairly simple to build custom tags whose attributes accept deferred-value expressions.
如在前面的例子见到的一样，构建属性接受deferred - value表达式的定制标记是相当简单的。
The RegexMatch function provides many features to SQL Server, but the regular expressions implementation in.net provides much more, as you'll see next.
regexmatch函数为SQLServer提供了许多功能，而. NET中的正则表达式实现提供的功能则更多，正如您在下面内容中将看到的一样。
With W3Eval, you can see everything you are calculating and easily edit expressions.
有了W3Eval，您就能看到参与计算的所有东西，还能轻松的编辑表达式。
An example of this is in JET's ability to use camelcase in XPath expressions by extending this extension point (see the CamelCaseFunction in the JET source code).
一个JET中这样的例子是：通过扩展该扩展点，在XPath表达式中使用camelcase(参见jet源代码中的CamelCaseFunction)。
You'll work through an example application that retrieves regular expressions from ResourceBundles and USES them for data validation (see Downloads).
您将实践一个示例应用程序，该应用程序从ResourceBundles获得正则表达式，并将它们用于数据验证(请参见下载小节)。
The classic approach to writing code to evaluate arithmetic expressions was described by Donald Knuth in 1962 (see Resources). Knuth Outlines three steps.
编写代码对算术表达式求值的经典方法由DonaldKnuth描述于1962年(请参阅参考资料)。
As long as there aren't too many, you will see significant performance gain if you use Compiled on expressions that are heavily used.
如果将Compiled用于大量使用的表达式，只要选项不是太多，您会发现显著的性能改进。
The Contract4J home page (see Resources) provides extensive documentation on the API and other customization options, as well as allowed test expressions, known limitations, and idiosyncrasies.
Contract4J的主页(请参阅参考资料)提供了有关API、其他定制选项以及允许的测试表达式、已知的限制和特性方面的丰富文档。
The best advice for the beginner is: learn the basics of regular expressions (see Resources or the "perldoc perlre" manual page), but stay away from the advanced features for a little while.
对于初学者的一个最好的建议就是：首先学习最基本的正则表达式(参阅资料部分，或“perldocperlre ”参考手册)，稍后才进一步学习那些复杂的高级特性。
See the XPath conditions section to understand how such expressions are evaluated.
参见XPath条件一节来理解这类表达式的计算方式。
Ruleset (see Listing 3) represents a set of regular expressions.
Ruleset(请参阅清单3)表示一组正则表达式。
The AlignAssignments function first sets up two regular expressions (see: help pattern for the necessary details of Vim's regex syntax).
AlignAssignments函数首先创建两个正则表达式(参见：helppattern获得有关Vim正则表达式语法的必要细节)。
Its unique ability to evaluate expressions step by step is very handy, because the user can see each step of evaluation, together with temporary results.
它独特的能力(一步一步的对表达式求值)非常容易实现，因为用户能看到求值的每一步，包括临时结果。
You can't see the other person, so you can't interpret facial expressions and body language.
你看不见对方，所以你无法明白对方的面部表情和体态语。
As you can see in Listing 15, regular expressions quickly become difficult to read.
如清单15所示，正则表达式很快就变得难以理解。
For more detailed information on regular expressions, see Resources.
有关正则表达式更详细的信息，请参阅参考资料。
You can see all the expressions and scroll down or up.
你可以看到所有的表情和向下滚动，或行动。
But their father, though very laconic in his expressions of pleasure, was really glad to see them; he had felt their importance in the family circle.
倒是她们的父亲，看到两个女儿回家来了，嘴上虽然没有说什么欢天喜地的话，心里确实非常高兴。他早就体会到，这两个女儿在家里的地位多么重要。
Some experts said that the site provides a skewed view because its users cannot see body language or facial expressions.
一些专家说由于孩子们在使用社交网络的时候，不能看到对方的身体语言以及脸部表情等，所以很容易造成曲解。
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