刑事案件的时效为 2 至 30 年不等，取决于特定犯罪法定的刑罚轻重程度，从实 施犯罪或产生后果之日起计算。
The period of limitation for criminal cases ranges from 2 to 30 years, depending on the severity of the sentence prescribed for a specific crime, and starts on the day the crime was committed or the consequence occurred.