RP's output is the same as ParseTree's output: s-expressions using ruby's arrays and base types.

RP的输出与语法分析树的输出相同：用ruby中的数组以及基本类型来表达的s-expression。

youdao

In my opinion, the density of Perl 5's regular expressions is one of the reasons why the language is so powerful, while at the same time fairly hard to maintain.

我认为，Perl 5的正则表达式的晦涩，也正是这门语言如此强大的原因之一，尽管它同时还相当难以维护。

youdao

Regular expressions: search word (s) will be regarded as a regular expression (in keyword search words will be treated as a sequence of regular expressions).

正则表达式：搜索单词将作为一个正则表达式(在关键字搜索中，单词被视为正则表达式系列)。

youdao

There have been -- there's been ample reporting on strains within the leadership, ample reporting and explicit expressions of the fact that -- by Iranian leaders of the impact on the Iranian economy, the effect on the currency.

WHITEHOUSE: Press Briefing

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Objectors' concerns ranged from security issues - with fears that it would attract vandalism and publicity seekers - to expressions of dislike of the artist's work.

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