| 词汇 | RA |
| 释义 | RA adjective anatomy specialized uk/ɑː ˈeɪ/ us/aːr ˈeɪ/ 桡动脉（radial artery的缩写） abbreviation for radial artery: the artery (= large blood vessel) that goes from below the elbow to the palm of the hand RA noun [ C ] anatomy specialized uk/ɑː ˈeɪ/ us/aːr ˈeɪ/ 右心房（right atrium的缩写） abbreviation for right atrium: the right upper chamber (= space) of the heart |
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