portal lobule

例句：

1. 1.The portal lobule is a small opening in the wall that leads to the outside world.
   门腔是墙上的一个小开口，通向外部世界。
2. 2.The portal lobule is responsible for allowing people to enter and exit the building.
   门腔负责让人们进入和退出建筑物。
3. 3.The portal lobule is often used as a decorative feature on the exterior of buildings.
   门腔通常用作建筑物外墙的装饰特征。