A membrane, especially one of the three membranes enclosing the brain and spinal cord in vertebrates.
脑膜一种膜, 尤指覆盖脑子和脊椎中脊髓的三种细胞膜之一
In brief, mammals are warm-blooded, lung-breathing, hairy vertebrates.
简言之, 哺乳动物是温血、肺呼吸和多毛的脊椎动物。
A corresponding part in other vertebrates.
手指, 足趾其它脊椎动物相对应的部位
