pleural recesses

例句：

1. 1. The patient was admitted to the hospital with a chest infection.
   患者因胸部感染入院。
2. 2. During surgery, the surgeon carefully removed the pleural recesses.
   手术中，外科医生小心翼翼地切除了肺陷凹。
3. 3. Pleural recesses are areas of air sacs in the lungs that can become infected.
   肺陷凹是肺部的空气囊，它们有可能感染。