The following steps may be effective : take into account all the details related to a crime including the circumstances for discretion without regard to the concrete legal circumstances presumably ; decide abstractly the standard of punishment which should be applied to the crime ; examine the legal circumstances and adjust the said criterion 刑法规定的法定量刑情节需要一个参照基准,应在假定不考虑犯罪人的具体法定量刑情节的基础上,考虑犯罪人所有的与犯罪有关的全部犯罪细节包括酌定情节,抽象地确定这一犯罪应当适用的基准刑罚,再在此基础上,考虑量刑的法定情节,对基准刑罚进行适当的调整。