reconnaissance

• 指为获取敌方兵力、地形或其他情况而进行的军事或情报侦察活动；也泛指事先的调查或探测。

A noun referring to the military or exploratory activity of surveying an area to gather information about enemy forces, terrain, or other features.

1. Military explorationC1formal

   A military mission to gather information about enemy forces, positions, or terrain.

   侦察

   • The unit conducted a reconnaissance mission behind enemy lines.
   • Reconnaissance aircraft flew over the area to assess damage.
   • They used drones for reconnaissance before the attack.

   同义词explorationpatrolreconnoiteringscoutingspyingsurveillancesurvey

2. C1formal

   A preliminary survey or exploration of an area to gather information for planning.

   侦察

   • The team did a reconnaissance of the building site before construction.
   • Reconnaissance of the market helped them understand consumer needs.
   • They performed a reconnaissance of the route before the expedition.

   同义词explorationprobereconnaissance missionscoutingsurvey