OPRn.光学页面阅读器OPabbr.观测点(=Observation post)Ophiothrixhybridan.混血刺蛇尾Ophiostoma spp.长喙壳苗Ophiomitraplicatan.褶帽蛇尾Ophiacantha voraxn.贪婪棘蛇尾ophthalmovascular[医] 眼血管的opressive weather闷热的天气Ophiuraflagellatan.鞭真蛇尾Ophiorrhiza densan.密脉蛇根草Opuntia Milpa Alt食用仙人掌ophiolite melange蛇绿杂岩带