tracheal epithelium

例句：

1. 1. The tracheal epithelium plays a crucialrole in the body's immune response.
   气管上皮在身体免疫系统中起着至关重要的作用。
2. 2. During an asthma attack, the tracheal epithelium becomes inflamed and narrowed.
   哮喘发作期间，气管上皮发炎并变窄。
3. 3. Researchers are studying the tracheal epithelium to better understand how itresponds to different environmental factors.
   研究人员正在研究气管上皮以更好地了解它如何对不同的环境因素做出反应。