(=bachelor of obstetrics) 產(chǎn)科學(xué)士,(=basal acid output) 基礎(chǔ)(胃)酸排量,(=brachial artery output) 肱動(dòng)脈排出量,(=british association of orthodontists) 英國(guó)正牙學(xué)家協(xié)會(huì),(=british association of otolaryngologists) 英國(guó)耳鼻喉科學(xué)家協(xié)會(huì)