ductus cuvieri

例句：

1. 1. The doctor inserted a ductus into the patient's chest to relieve his pain.
   医生将一根导管插入病人的胸腔以缓解他的疼痛。
2. 2.The vein was blocked, and the doctor had to use a ductus to remove the blockage.
   静脉被阻塞了，医生不得不使用一根导管来移除阻塞。
3. 3. Blood vessels are essential for carrying oxygen and nutrients throughout the body.
   血管对于输送氧气和营养物质在整个身体中至关重要。