Submarines are most vulnerable to detection when the submarine commander USES a periscope to assess the situation on the surface.

当潜艇指挥官使用潜望镜对海面态势进行评估的时候最容易被探测到也最容易被攻击。

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The radar provides the helicopter with long-range search, imaging and tracking of surface vessels, a periscope detection mode, and the IFF to identify other aircraft in flight.

雷达给直升机提供远程搜索、水面舰艇的成像和跟踪、潜艇检测，并使用敌我识别系统识别飞行中的其他飞机。

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They were wider than a man's hand with his fingers spread and the fish's eye looked as detached as the mirrors in a periscope or as a saint in a procession.

这些条纹比一个人揸开五指的手更宽，它的眼睛看上去冷漠得象潜望镜中的反射镜，或者迎神行列中的圣徒像。

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In the game Steel Diver the 3DS functions as a submarine periscope, with the screen displaying a view of enemy ships on the surface.

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