apical segmental bronchus

例句：

1. 1.The lung is divided into segments to facilitate diagnosis and treatment.
   肺部被划分为多个段，以便于诊断和治疗。
2. 2. The segmental bronchi are the smallest divisions of the trachea.
   段支气管是气管的最小分支。
3. 3. The segmental bronchi are responsible for the distribution of air throughout the lungs.
   段支气管负责将空气分配到肺部的各个部分。