免疫学

例句：

1. 1. Immunology is the study of how the immune system works.
   免疫学是研究免疫系统如何工作的学科。
2. 2.The immune system plays a crucial role in protecting us from diseases.
   免疫系统在保护我们免受疾病侵害中起着至关重要的作用。
3. 3. In recent years, there has been significant progress in the field of immunology.
   近年来，免疫学领域取得了显著的进展。