得知增援仅一小时路程，将军撤销了撤退命令。
The general countermanded the retreat order upon learning that reinforcements were only an hour away.
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解释
countermand 在军事语境中表示“撤销先前的命令”。
The general countermanded the retreat order upon learning that reinforcements were only an hour away.
countermand 在军事语境中表示“撤销先前的命令”。