When an elephant gets a whiff of something interesting, it sniffs the air with its trunk raised up like a submarine periscope.

大象闻到一些感兴趣的味道，它就闻着那个味道翘起鼻子就像潜艇望远镜。

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To compensate, they plan to install a submarine periscope at the top of the vertical steel ladder leading to the original access hatch.

作为补偿，他们打算在竖直的钢梯顶部安置一个潜水艇的潜望镜，这个钢梯是通往原先过道出口的。

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The paper introduces the configuration of system and the work principle of the closed and opened loop control in the pitching of collimation prism of the submarine periscope.

介绍潜艇潜望镜瞄准棱镜俯仰的闭环控制与开环控制的组成及其工作原理。

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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.

FORBES: Technology

The Royal Navy's official inquiry concluded HMS Affray sank because the snort mast, the tube through which the diesel engine "breathed" while the submarine was at periscope depth, snapped because of metal fatigue.

BBC: HMS Affray submarine sinking remembered off Alderney