to change an order that has already been given, especially by giving a new order
发音
例句
1. I have now to countermand that order, in consequence of the receipting of the letter this morning. 由于今日上午才收到来函,现在只好取消那份订单。 2. The general countermand the orders issued in his absence. 将军撤销了他不在时所发布的命令。