cardiac functional compensatory period

例句：

1. 1. The heartis the primary organ responsible for circulating blood throughout the body.
   心脏是负责将血液输送到全身的主要器官。
2. 2. Cardiologists specialize in the diagnosis and treatmentof heart diseases.
   心脏病学家专门从事心脏病的诊断和治疗。
3. 3. During atrialfibrillation, the heart'srhythm becomes irregular, causing symptoms such aspalpitations.
   在房颤期间，心脏的节律变得不规则，导致心悸等症状。