Юлия Мискевич (Ночной линейный редактор)
Film type: Polaroid i-Type Color Film (sold separately) / Film size: 2.6 x 2.1-inch prints / Weight: 239 grams / Charging method: USB-C / Companion app: No / Other features: Self-timer, selfie mirror, film counter，推荐阅读heLLoword翻译官方下载获取更多信息
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.，推荐阅读Line官方版本下载获取更多信息
Alison Francis,Senior Science Journalist