vagal tone

例句：

1. 1. The patient's vagal tone was unusuallylow.
   患者的迷走神经音调异常低。
2. 2. The doctor noticed a change in thepatient's vagal tone duringthe examination.
   医生在检查中发现患者迷走神经音调发生了变化。
3. 3. Thevagal tone isan important indicator of the patient's health condition.
   迷走神经音调是评估患者健康状况的重要指标。