alive nonterminal 活非终结符...unstarred nonterminal 未加星号非终结符...unreachable nonterminal 执行不到的非终结符...nonterminal node 非终节点...dead nonterminal 死非终结符,停用非终结符...unmarked nonterminal 未标记非终结符...syntactic nonterminal 语法非终结符...extraneous nonterminal 无关非终结符...starred nonterminal 加星号非终结符...left part nonterminal 左部非终结符...nonterminal olefin 非末端烯烃;内烯烃...left recursive nonterminal 左递归非终结符...marked nonterminal 标记非终结符...
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