subminn.超小型摄影机subn.潜艇；替代品vi.替代vt.转包合同subalpine region亚高山区subfossorial leg拟掘足subarea division电网分区Subgen Saussurea风毛菊亚属substituent name取代基名称subgrade filling路基填筑subproblem graph子问题图sub-elliptical近似椭圆subclavian trunk锁下(淋巴)干subsurface space地下空间