cerebrospinal fluid
/səɹˌiːbɹəspˈaɪnəl ˈfluːɪd/
n
English · cerebrospinal fluid中文 · 脑脊液Español · líquido cerebroespinalFrançais · liquide céphalo-rachidien
意味：Fluid contained between the arachnoid and the pia mater around the spinal cord and serving mainly as a shock absorber; it protects the entire central nervous system.