Question

reconnaissance 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;勘探;选点;勘查;

Accepted Answer

英[rɪˈkɒnɪsns]  美[rɪˈkɑnɪsns] N-UNCOUNT（派士兵或飞机）侦察；（用卫星）搜索，勘测Reconnaissance is the activity of obtaining military information about a place by sending soldiers or planes there, or by the use of satellites.例：The helicopter was returning from a reconnaissance mission...直升机完成侦察任务后正在返航。例：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。

单词	reconnaissance
音标	英[rɪˈkɒnɪsns] 美[rɪˈkɑnɪsns]
解释	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;勘探;选点;勘查;
例句	N-UNCOUNT （派士兵或飞机）侦察；（用卫星）搜索，勘测 Reconnaissance is the activity of obtaining military information about a place by sending soldiers or planes there, or by the use of satellites. 例：The helicopter was returning from a reconnaissance mission...直升机完成侦察任务后正在返航。例：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。
变形

Reconnaissance 例：The 英[Rɪˈkɒnɪsns 美[Rɪˈkɑnɪsns 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;勘探;选点;勘查 N Uncount 派士兵或飞机）侦察；（用卫星）搜索，勘测 Activity