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.
在这个承前启后的节点，每一次更迭，是个体转场跃迁的落款，亦是企业演进变迁的注脚。。爱思助手下载最新版本是该领域的重要参考
，这一点在搜狗输入法下载中也有详细论述
Jo Haywood first went to the Daventry Community Larder in Northamptonshire as a shopper and for the past two years has volunteered to run the service.。heLLoword翻译官方下载对此有专业解读
這不是個案。那些曾經斥責子女「別老盯着屏幕」的父母，如今自己卻成了最難放下手機的人，過年回家管控父母手機使用，已成為中國年輕人心照不宣的「新年俗」。
Гангстер одним ударом расправился с туристом в Таиланде и попал на видео18:08