underseaWiktionary 原文英美adj.海面下的adv.在海面下中文释义来自 ECDICT构词拆解underunder-前缀seasea词干under-Beneath, under · (figurative) To go from one side to the other; to progress along a path词源说明From under- + sea.释义形容词adjective1Existing, relating to, or made for use beneath the sea, that is, beneath the sea surface, inside the sea.