| 释义 |
periscope
UK ['per.ɪ.skəʊp] US [-skoʊp] noun countable
■a long vertical tube containing a set of mirrors which gives you a view of what is above you when you look through the bottom of the tube 潜望镜•Periscopes are used in submarines to allow you to look above the surface of the water.潜水艇上装有潜望镜，透过它可以观察水面以上的情况。 |