rate of breathing

例句：

1. 1. The doctor recommended a low-carb diet to help her manage her diabetes.
   医生建议她采用低碳水化合物饮食来管理她的糖尿病。
2. 2.She was surprised to find that the air quality in the city had improved significantly.
   她惊讶地发现，城市的空气质量有显著改善。
3. 3.The scientist conducted experiments to study the effect of different breathing rates on heart rate.
   科学家进行了实验，研究不同呼吸速率对心率的影响。