cerebrospinal fluid

例句：

1. 1.Cerebrospinal fluid is a fluid that surrounds the brain and spinal cord.
   脑脊液是一种环绕着大脑和脊髓的液体。
2. 2. The doctors removed the fluid from his body to treat his infection.
   医生从他的体内移除了液体来治疗他的感染。
3. 3.The study found that cerebrospinal fluid plays an important role in maintaining brain health.
   研究发现，脑脊液在维护大脑健康方面起着重要作用。