a warship with a streamlined hull designed to operate completely submerged in the sea for long periods, equipped with an internal store of air and a periscope and typically armed with torpedoes and/or missiles
潜艇,潜水艇。
a submersible craft of any kind
潜水器,深潜器。
〈北 美〉 潜艇三明治。
existing, occurring, done, or used under the surface of the sea
水下的;水下发生的;海中的,海底的
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submarine volcanic activity .海底火山活动。