Ductulus aberrans superior

例句：

1. 1. The blood vessels in the skin are called capillaries.
   皮肤中的血管被称为毛细血管。
2. 2. The roots of trees are filled with tiny xylem tubes.
   树木的根部充满了微小的木质部导管。
3. 3.The plant uses water from the soil to transport nutrients through its xylem and phloem.
   植物通过其木质部和韧皮部从土壤中吸收水分来运输养分。