n. repeal of a former order（对原令的）撤销令。
△R.III.2.1.90: “Some tardy cripple bare thecountermand，”撤销令却是某个行动缓慢的瘸子送去的。
countermand
vt. stop,prohibit禁止。
△Com.4.2.37:“one that countermands / The passages of alleys,creeks,and narrow lands；”他禁止人通行某些街巷、小路和
窄窄的田埂。
countermand[ˌkauntəˈmɑ:nd]
v.取消，撤销，撤回
‖ countermand of a cheque撤回支票
countermand of payment暂停支付到票，挂失
countermanding of an election撤销选举