OPPS门诊预付制OPPabbr.对面的；相反的（=opposite）opposing enzyme拮抗酶opposing extent反对程度Oppolzer's signoppointed ratio约率opponens splint对向肌夹, 对掌夹板opposable thumbph.opposing values相销价值oppugn thinking质疑思维理念opposing terror反恐opposing series反向串联