periscope
n. 潜望镜
A periscope is a vertical tube which people inside submarines can look through to see above the surface of the water.
1. an optical instrument that provides a view of an otherwise obstructed field
Fin whale has become a periscope?
鲸鱼鳍成了潜望镜?
Now use your periscope to see around corners and over wall.
现在使用你的潜望镜环视各个角落和墙壁.
A water snake glided smoothly up the pool, twisting its periscope head from side to side.
一条水蛇蜿蜒到水潭来, 扭伸着头,把它象潜望镜似的摆来摆去.
Three kinds of periscope series are now produced in Thales Optronics.
泰利斯光电子公司目前生产三种系列的潜望镜.
A simple periscope uses mirrors.
简单的潜望镜使用平面镜.