atrial systole

例句：

1. 1.During atrial systole, the heart's chambers fill with blood.
   在心房收缩期间，心脏的腔室充满血液。
2. 2.Atrial systole is a crucial part of the heart's pumping cycle.
   心房收缩是心脏泵血循环中至关重要的一部分。
3. 3. The doctor explained that atrial systole can be a sign of an underlying heart condition.
   医生解释说，心房收缩可能是潜在心脏病症状的标志。