perivascular space

例句：

1. 1.The researchers found that the perivascular space was filled with fluid.
   研究人员发现，血管周围空间充满了液体。
2. 2. The surgeon removed a tumor from the patient's perivascular space.
   外科医生从患者的血管周围空间移除了一个肿瘤。
3. 3. The study revealed that the perivascular space plays an important role in tissue regeneration.
   研究显示，血管周围空间在组织再生中起着重要的作用。