词汇	self-refer
释义	self-referCOCA²⁸⁰¹³⁶⁺⁵🌏自涉
随便看	context free grmmar contextfree language context free language context-free language context-free language recognizer context freeness context-free normal system context-free parser context free parsing context free phrase structure grammar context-free phrase structure grammar context-free phrase structure rule context-free program context-free programmed grammar context-free recognition algorithm context-free rewriting rule context free rule context-free rule context-free rules context-free speech context free text context-free text context-free tree grammar context function context graph