async *transform(source) {
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。关于这个话题，谷歌浏览器【最新下载地址】提供了深入分析
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Любовь Ширижик (Старший редактор отдела «Силовые структуры»)
This formula is satisfiable because if we set to b to true and a to false, then the whole formula is true. All other assignments make the formula false, but it doesn't change that the formula is satisfiable as long as there is at least one assignment makes the formula true.