renal plexus

例句：

1. 1. The kidneys are responsible for filtering waste products from the bloodstream.
   肾脏负责过滤血液中的废物。
2. 2. The renal plexus is a network of blood vessels that supplies blood to the kidneys.
   肾丛是一组血管网络，为肾脏提供血液。
3. 3. The renal plexus is a critical area for maintaining proper kidney function.
   肾丛是维护肾脏功能的关键区域。