submachineWiktionary 原文英美submachine1词源 1构词拆解subsub-前缀machinemachine词干sub-Under, beneath. · Subsidiary, secondary.词源说明From sub- + machine.释义名词noun1A machine forming part of a larger machine.submachine2词源 2词源说明Shortened from submachine gun.释义形容词adjective1Of or pertaining to a submachine gun.