劍橋詞典 MB noun [C] (QUALIFICATION) UK (US BM) abbreviation for Bachelor of Medicine: a degree in medicine , or a person who has this degree 毉學(xué)學(xué)士學(xué)位；毉學(xué)學(xué)士（Bachelor of Medicine的縮寫） MB noun [C] (COMPUTING) written abbreviation for megabyte : a unit used in measuring the amount of information a computer can store , with the value 1,048,576 bytes 兆字節(jié)，百萬(wàn)字節(jié)（megabyte的縮寫） 返回 MB