central nervous system
noun [ C usually singular ] uk/ˌsen.trəl ˈnɜː.vəs ˌsɪs.təm/ us/ˌsen.trəl ˈnɝː.vəs ˌsɪs.təm/ (abbreviation CNS)
中枢神经系统
the main system of nerve control in a living thing, consisting of the brain and the main nerves connected to it