snorkel

A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.

由弯曲管组成的呼吸装置,适合游泳者口中并延伸到水面上方；允许游泳者在水中面朝下时呼吸

breathing device consisting of a bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water

A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.

通气装置,伸缩式管道含进排气,使潜艇长时间潜航

air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time