cardiac ejection

例句：

1. 1. Cardiac ejection is a crucial factor in determining the health of an individual's heart.
   心脏射血是决定一个人心脏健康状况的关键因素。
2. 2.During exercise, the heart's cardiac ejection fraction increases to maintain blood flow to muscles.
   运动时，心脏的射血分数增加以维持肌肉的血流量。
3. 3.The study found that cardiac ejection was significantly reduced in patients with heart failure.
   研究发现，患有心力衰竭的患者心脏射血显著减少。