The proletariat is the universal class, the class whose radical chains are capable of bursting asunder.
无产阶级是普遍的阶级,他们的根本锁链是可以破裂的阶级。
Model checking is a powerful tool for verifying the correctness of hardware and software systems.
【释义】:早晨能发现昨夜的错误,今日能悔改昨日的过失。