这些问题涉及到在很多潜在解决方案中进行搜索，以找到那些满足规则的解决方案。
These problems involve searching among many potential solutions to find those that satisfy the rules.
当处理规则表达式时，将它作为它自己的编程问题来处理，即使只涉及一或两行代码；这些行有效地构成了一个小程序。
When approaching a regular expression, treat it as its own programming problem, even though only one or two lines of code may be involved; those lines effectively form a small program.
另外一些方面涉及关于系统构架提出的重要问题；例如“规则设计”可能会引出“解决方案将需要一个规则引擎吗？”
Others relate to important issues to be raised about the system architecture; for example "rule Design" may lead to the "Will a solution require a rule engine?"
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