N-UNCOUNT
(派士兵或飛機(jī))偵察;(用衛(wèi)星)搜索,勘測(cè)
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...
直升機(jī)完成偵察任務(wù)后正在返航。
The aircraft will be used for reconnaissance rather than combat.
這架飛機(jī)將用于執(zhí)行偵察任務(wù)而不是戰(zhàn)斗任務(wù)。