If you cannot specify the number of characters that comprise a match, regular expressions support the concept of quantifiers.

如果您无法指定组成比对的字元数量，规则运算式会支援限定词的概念。

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Our three languages also share support for regular expressions and pattern matching.

这三种语言都支持正则表达式和模式匹配。

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There are a small number of new features: a console library ( io-console gem) was integrated, Unicode 6 support for regular expressions, and a bunch of new methods for the builtin classes.

同时也增加了一些新特性：集成了控制台类库（ io-console gem），正则表达式中增加了对 Unicode 6的支持，以及新增了 一些内部类中的方法。

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Under the International Fund for Cultural Diversity (IFCD), established in the framework of the UNESCO 2005 Convention on the Protection and Promotion of the Diversity of Cultural Expressions, support is provided on a regular basis to developing countries, including non-governmental organisations, for projects in the fields of cultural policies and cultural industries.

UNESCO: Culture for Sustainable Development