n.侦察；勘察
A patrol was sent on reconnaissance. 一支巡逻队被派去执行侦察任务。
The squadron flew a reconnaissance mission. 该空军中队执行一侦察任务。
A reconnaissance plane was circling over the enemy's position. 一架侦察机正在敌人阵地上空盘旋。
The uranium reconnaissance was undertaken in the U.K. 在英国境内曾开展过铀矿勘察工作。
