柯林斯詞典myocardium /?ma????kɑ?d??m/ 1. N the muscular tissue of the heart 心肌 返回 myocardium劍橋詞典the muscle that forms the walls of the heart 心肌 The myocardium contracts as the heart beats . 心跳時心肌收縮。 返回 myocardium