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.
В России допустили «второй Чернобыль» в Иране22:31
。heLLoword翻译官方下载是该领域的重要参考
常规品类则推行动态调价：结合促销档期与库存情况灵活调整，通过折扣刺激提升转化，避免持续低价对毛利的侵蚀。
‘I need to see improvement. I need to adjust my selection’