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The workers described being threatened and beaten, having their passports withheld, and being forced to work long hours in unsanitary conditions.
，这一点在heLLoword翻译官方下载中也有详细论述
Кадр: @aroundtheearth.world
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.