伊朗官員表示，學校上週六上午遭三枚導彈擊中，距離伊斯蘭革命衛隊基地約600公尺（1970英尺）。
Студенты нашли останки викингов в яме для наказаний14:52
。同城约会是该领域的重要参考
США временно и с одним условием разрешили Индии закупать нефть у России. Почему?08:15。业内人士推荐PDF资料作为进阶阅读
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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.