There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
智能涌现：为什么给公司命名为小雨智造？小雨这个寓意和你们的经营理念有什么相关性吗？，详情可参考体育直播
В Иране заявили о поражении американского эсминца02:21，详情可参考WPS官方版本下载
Екатерина Грищенко (старший редактор отдела «Бывший СССР»)。爱思助手下载最新版本是该领域的重要参考
As US-Israeli airstrikes hit their cities, people tell of how the authorities are warning them off the streets