在您学会正则表达式的语法(也许相当晦涩)之后，就可以将您的专业知识灵活运用到不同的工具、编程语言和操作系统。

Once you learn the (admittedly cryptic) syntax of regular expressions, you can transfer your expertise among tools, programming languages, and operating systems.

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但是，一旦正式描述它的某种语言和语法变得复杂，那么语言中的有效表达式数量将迅速增加。

Once a language and the grammar that formally describes it becomes complex, however, the number of valid expressions in the language grows rapidly.

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因此，有关扩展断言表达式有关因此语言和英语中的契约表述的争论，在一个较长时期后将会契约争论表述沉寂下来。

So that particular argument for extending particular function argument the assertion language or for expressing contracts in English goes away at least in the long term.

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