第三人称复数：periscopes
名词潜望镜
1. 潜望镜,观测镜：peripheral vascular clamp 外周血管夹 | periscope 潜望镜,观测镜 | periscopic lens 周视透镜
2. 环视潜望镜潜望镜：periscope 环视潜望镜 | periscope 环视潜望镜潜望镜 | periscope 潜望镜
3. 环视潜望镜：periscope hole 检视孔 | periscope 环视潜望镜 | periscope 环视潜望镜潜望镜
1. 潜望镜
A periscope is a vertical tube which people inside submarines can look through to see above the surface of the water.
noun
1. an optical instrument that provides a view of an otherwise obstructed field