small saphenous vein

例句：

1. 1.The doctor advised him to take a small saphenous vein for the pain.
   医生建议他服用小的静脉来缓解疼痛。
2. 2. During surgery, doctors often use small saphenous veins to help with blood flow.
   在手术中，医生经常使用小的静脉来帮助血液流动。
3. 3.The patient was given an injection of small saphenous veins to treat his condition.
   患者接受了小的静脉注射来治疗他的病情。