fiber duct

例句：

1. 1. The fiber ducts in the lungs help to filter air and remove waste gases.
   肺部的纤维导管有助于过滤空气和去除废气。
2. 2. The fiber ducts are essential for the proper functioning of the digestive system.
   纤维导管对于消化系统的正常运作至关重要。
3. 3. The fiber ducts in the skin are responsible for transporting nutrients and oxygen to the cells.
   皮肤中的纤维导管负责将营养物质和氧气输送到细胞中。