31.218 继续努力，以便根据《联合国囚犯待遇最低限度标准规则》(《纳尔逊·曼德拉规则》)改革监狱系统(南非)；
31.218 Continue its efforts aimed at reforming the prison system in line with the United Nations Standard Minimum Rules for the Treatment of Prisoners (the Nelson Mandela Rules) (South Africa);