kidney governing water metabolism

例句：

1. 1.Kidneys are responsible for filteringblood and removing waste products.
   肾脏负责过滤血液和排除废物。
2. 2. The kidneys playa crucial role in maintaining the body's balance of electrolytes.
   肾脏在维持身体电解质平衡方面起着至关重要的作用。
3. 3.Kidney failure can lead to serious healthproblems if not treated promptly.
   如果不及时治疗，肾脏衰竭可能会导致严重的健康问题。