He was fined for illegal parking, and the judge told him that ignorance of the law is no excuse.
Его оштрафовали за незаконную парковку, и судья сказал ему, что незнание закона не освобождает от ответственности.
Definitions
This phrase means that a person cannot avoid legal responsibility for violating a law by claiming they were unaware of it. Everyone is presumed to know the law, so not knowing about a law does not exempt someone from being held accountable for breaking it.