subito<意> adv.[音]骤起地； 急速地subn.潜艇；替代品vi.替代vt.转包合同subsequence unit子程序装置subshock therapy微电击疗法subaerial relief陆上地形submergible pump潜水泵subacid solution微酸性溶液subgrade project路基工程subungual tumors甲下肿瘤subcontrol panel辅助操纵面板subsurface brine地下卤水subtentorial air幕下气体