劍橋詞典 MD noun [C] (DOCTOR) US abbreviation for Doctor of Medicine: a degree that someone must have to work as a doctor , or a person who has this degree 醫(yī)學(xué)博士（Doctor of Medicine的縮寫） Stephen Day, MD 醫(yī)學(xué)博士斯蒂芬?泰 MD noun [C] (MANAGER) UK abbreviation for managing director 總裁，總經(jīng)理（managing director的縮寫） You should talk to the MD about your proposal . 你應(yīng)該和總經(jīng)理談?wù)勀愕慕ㄗh。 MD noun [C] (RECORDING) abbreviation for MiniDisc 迷你磁盤，小型光盤（MiniDisc的縮寫） MD noun [C] (ADDRESS) written abbreviation for the US state of Maryland: used in addresses （美國）馬里蘭州（寫地址時Maryland的縮寫） 返回 MD