OBSabbr.观察(=Observation）abbr.瞭望台（=Observatory）abbr.已废的(=Obsolete)abbr.无线电定向标选择器(=Omnibearing Selector)obstetricadj.产科的=obstetrical.obscurantn.反启蒙主义者；反对开化论者obsterics(abbr.；OBobstinacyn.顽固；(病痛等)难治obstruentn.[罕][解](体内通道的)堵塞物(例如肾石)；止泻剂adj.[罕]闭塞的；阻碍的Obstrical产科的obstinancen.顽固；固执obsequencen.巴结；奉承拍马(亦作obsequeence)obstetrist[医] 产科医师Obstetrice产科