Reconnaissance is the activity of obtaining military information about a place by sending soldiers or planes there, or by the use of satellites.
例句
The helicopter was returning from a reconnaissance mission...直升机完成侦察任务后正在返航。The aircraft will be used for reconnaissance rather than combat.这架飞机将用于执行侦察任务而不是战斗任务。
英汉词典释义
n.
(对某地区的)侦察或观测(尤指为军事目的);(执行侦察任务的)巡逻队、飞行队等
We set up reconnaissance of enemy movements.我们加强了对敌军活动的侦察。
英英词典释义
Noun
1. the act of reconnoitring (especially to gain information about an enemy or potential enemy);
"an exchange of fire occurred on a reconnaissance mission"