composite vein

例句：

1. 1. The patient's condition is stable, but the composite vein is still swollen.
   病人的状况稳定，但复合静脉仍然肿胀。
2. 2.The surgeon removed the composite vein and replaced it with a synthetic material.
   外科医生移除了复合静脉并用合成材料替换了它。
3. 3. The doctor advised the patient to exercise regularly to prevent further complications in the composite vein.
   医生建议病人定期锻炼以防止复合静脉的进一步并发症。