unavoidably

The conflict of the class interests results in the pitiless class-struggle that unavoidably leads to the victory of the most numerous and most wronged class, the proletariat.

阶级利益的冲突导致了无情的阶级斗争，从而不可避免地导致了最广大的、最受虐待的阶级，即无产阶级的胜利。