a cephalopod mollusc with a light external spiral shell and numerous short tentacles around the mouth. Nautiluses swim with the buoyant gas-filled shell upright and descend to greater depths during the day.
鹦鹉螺。
(亦作
同
the first nuclear-powered submarine, launched in 1954. This US navy vessel made a historic journey (1-5 August 1958) under the ice of the North Pole.
“鹦鹉螺”号核动力潜艇(第一艘核动力潜艇,1954年下水,1958年8月1-5日这艘美国海军的核潜艇在北极冰层下进行了一次历史性航行)。
"modern Latin, from Latin, from Greek