pulmonary function recorder

例句：

1. 1. This device is used to measure the lung function of patients.
   这个设备用于测量患者的肺功能。
2. 2.The doctor recommended that he undergo a lung function test.
   医生建议他进行一次肺功能测试。
3. 3.The patient's lung function was severely compromised due to the illness.
   由于疾病，患者的肺功能严重受损。