Lieberkühn's glands

例句：

1. 1. The study of these glands is crucial for understanding the function of the immune system.
   研究这些腺体对于理解免疫系统的功能至关重要。
2. 2. The doctor performed a biopsy on the patient to investigate the cause of his chronic cough.
   医生对患者进行了活组织检查，以调查他慢性咳嗽的原因。
3. 3. The researchers discovered that the Lieberkühn's glands play a vital role in regulating body temperature.
   研究人员发现利伯克恩腺体在调节体温方面起着重要作用。