deficiency of trachea

例句：

1. 1. The doctor performed a surgery on the patient's trachea to relieve his breathing difficulties.
   医生为病人的气管进行了手术，以缓解他的呼吸困难。
2. 2. During the examination, the doctor carefully listened to the patient's trachea for any abnormal sounds.
   在检查过程中，医生仔细地听患者气管的声音，寻找任何异常声音。
3. 3. The patient was given an injection of medication into his trachea to treat his condition.
   患者被给予一种药物注射到他的气管中，以治疗他的状况。