viewing apparatus on a submarine, 1899, formed in English from peri- "around" + -scope "instrument for viewing." Earlier (1865) a technical term in photography. Related: Periscopic.
实用例句
1. The captain of the submarine has got this periscope thing.
那个潜艇艇长有个类似于潜望镜之类的东西.
来自柯林斯例句
2. The captain aligned the periscope on the bearing.
船长使潜望镜对准方位。
来自辞典例句
3. Now, peering through the periscope he remarked in businesslike tones.
