前: front有效: effective; valid; efficaciou ...撤消前有效指令: good till cancelled取消前有效: good till cancelled or countermanded; good until cancelled; good-till-cancelled; gtc取消前有效买卖盘: good-till-cancelled order (gtc)撤消前次操作: undo last撤销前有效: gtc; till countermanded解约前有效: good till cancelled当前有效需求: effective current demand未注销前有效: gtc good till cancelled; good till cancelled撤回前有效报价: offer good until withdrawn撤销前有效定单: good 'til cancelled order到期前有效买卖盘: good-till-date order (gtd)在未出售前有效: subject to being unsold前有: stoahead sign; yield sign ahead卖方撤回前有效的报盘: offer good until withdrawn by seller撤消: avoid; cancel; countermand; lift; quash; recall; recant; renegade; repeal; rescind; rescission; reversal; revocation; revoke; scratch; undo; unmake; withdrawal撤销前有效至撤销为止直到撤销为止: till countermanded除非客户撤消，否则一直有效的订单: good till cancelled order（g.t.c.）取消前言: cry off; recantation取消前约: cry offcall off the contract撤消(遗嘱): annulment撤消,废止: repeal撤消，撤退: withdraw废止，撤消: repeal
