The right atrium receives venous Blood from the superior and inferior venae cavae (see vena cava) and propels it into the pulmonary circulation.是什么意思_The right atrium receives venous Blood from the superior and inferior venae cavae (see vena cava) and propels it into the pulmonary circulation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句