Periscope

['perɪskəʊp] or ['pɛrɪskop]

解释:

(noun.) an optical instrument that provides a view of an otherwise obstructed field.

编辑:卡蒂--From WordNet

解释:

(n.) A general or comprehensive view.

(n.) an optical instrument of tubular shape containing an arrangement of lenses and mirrors (or prisms), allowing a person to observe a field of view otherwise obstructed, as beyond an obstructing object or (as in submarines) above the surface of the water.

安德鲁手打

解释:

n. an instrument like the altiscope used in directing submarine boats.—adj. Periscop′ic.

乔琳整理