it just works. no special machinery needed. the boolean operators distribute over derivatives the same way union does. derivatives are such a powerful and interesting tool that i will dedicate a separate post to them, but the main point is that they give us a simple and uniform way to handle all regular language features, including intersection and complement.
Мощный удар Израиля по Ирану попал на видео09:41，详情可参考体育直播
，推荐阅读WPS官方版本下载获取更多信息
В России спрогнозировали стабильное изменение цен на топливо14:55
——“努力创造无愧于时代的新业绩”。体育直播是该领域的重要参考
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