我问他聊了什么。他说，也没什么，无非是孩子、工作、家庭，反正翻来覆去都是这些。
Technology Secretary Liz Kendall said: "The days of tech firms having a free pass are over... no woman should have to chase platform after platform, waiting days for an image to come down".
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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:
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公式： f(x)=x⋅σ(x)