parens patriae
/ˌpærenzˈpætrɪiː/noun
1- Law the monarch, or any other authority, regarded as the legal protector of citizens unable to protect themselves【律】君主监护; 政府监护（君主或其他当局被认为是没有自我保护能力的公民的法定保护人）。
1.1
- mass noun the principle that political authority carries with it the responsibility for such protection政府监护原则。
词源
modern Latin, literally 'parent of the country'.