These cells, called glial cells, were once thought to be unimportant structural elements of the spinal cord that did nothing more than hold all the important things together, like the nerves.
这些细胞，称为神经胶质细胞， 它们曾经被认为 是脊髓里不重要的结构构件 仅仅是把其他重要的东西连接在一起， 比如说神经。