primary renal column

例句：

1. 1. The primary renal columnis responsible for filtering waste products fromthe blood.
   初级肾柱负责过滤血液中的废物。
2. 2. The primary renal column plays a crucialrole in maintaining the balance of electrolytes in the body.
   初级肾柱在维持体内电解质平衡中起着至关重要的作用。
3. 3. Inkidney disease, the primary renal column maybecome damaged, leading to reduced filtration capacity.
   在肾脏疾病中，初级肾柱可能受损，导致滤过能力降低。