音標(biāo)發(fā)音英式音標(biāo) [ɑ? ?e?]美式音標(biāo) [a?r ?e?]英式發(fā)音 美式發(fā)音 基本解釋橈動脈（radial artery的縮寫）, 右心房（right atrium的縮寫）。同根派生 RA相關(guān)詞英英字典劍橋英英字典 abbreviation for radial artery: the artery (= large blood vessel) that goes from below the elbow to the palm of the hand abbreviation for right atrium: the right upper chamber (= space) of the heartRA劍橋字典RA柯林斯字典