OMRn.光学标志读出器(光学指示读出器)OMabbr.功绩勋章(=Order of Merit)n.[印度教]唵(最主要和最神圣的一个音节)Omocestus nyalamusn.聂拉木牧草蝗omasum obstruction第三胃梗塞Omocestus petraeusn.曲线牧草蝗Ombrocharis dulcisn.喜雨草omphalomonodidymus脐部联胎Omphalopagus twins联体儿omnochrome pigment[医] 昆虫色素ombrophobous plant避雨植物omparison shopping比较购物omphaloportography脐门静脉造影