another good example is searching through paragraphs (below), which contain some combination of keywords. here the important part is ~(_*\n\n_*), or “does not contain two consecutive newlines”, in other words, the boundary of a paragraph, so it matches paragraphs! then you can combine it with any other regex to find paragraphs that contain certain keywords, but not others. this is very hard to do with traditional regexes without writing a complex and fragile pattern that tries to match the entire paragraph structure.
娄勤俭介绍，编纂采用适度法典化的方式：一是将现行的环境保护、污染防治方面的法律纳入法典，出台后不再保留原法律；二是现行的有关流域、区域、自然资源、生物多样性以及循环经济、节约能源等方面的法律制度规范，择其要旨要则体现到法典中；三是对于应对气候变化、碳达峰碳中和、绿色低碳发展等方面的法治需求，法典就此作出一些原则性、引领性规定，为今后我国相关法律制度建设留有空间，以体现法典的时代性、前瞻性。，推荐阅读PDF资料获取更多信息
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Раскрыта картина расправы над матерью шестерых детей в российской поликлинике08:50
Why the FT?See why over a million readers pay to read the Financial Times.。关于这个话题，PDF资料提供了深入分析