renal portal vein

例句：

1. 1. The kidneys are responsible for filtering waste products from the blood.
   肾脏负责过滤血液中的废物。
2. 2. The renal portal vein is a major artery that carries blood from the kidneys to the liver.
   肾门静脉是一条主要的动脉，将血液从肾脏输送到肝脏。
3. 3. During surgery, the renal portal vein is often blocked to prevent infection.
   在手术期间，经常阻断肾门静脉以防止感染。