submarinesn.潜艇名词submarine的复数形式.submarinen.潜水艇adj.海面下的submarine denudation海底剥蚀submarine topography海底地形submarine geornorphy海底地貌submarine morphology海底地形学submarine rescue ship潜艇救难舰submarine fault scarp海底断崖submarine air defense潜艇防空submarine diving test潜艇下潜试验submarine geosciences海底科学submarine thermometre海水温度表