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这句英文太长,Starting from a sentence consisting of a single disti

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这句英文太长,
Starting from a sentence consisting of a single distinguished nonterminal,called the goal symbol,a givencontext-free grammar specifies a language,namely,the (perhaps infinite) set of possible sequences ofterminal symbols that can result from repeatedly replacing any nonterminal in the sequence with a right-hand side of a production for which the nonterminal is the left-hand side.
这句英文太长,Starting from a sentence consisting of a single disti
Starting from a sentence consisting of a single distinguished nonterminal,是现在分词短语作状语
called the goal symbol是过去分词作非限制性定语,
a given context-free grammar 是主语
specifies是谓语
a language是宾语,
namely,the (perhaps infinite) set of possible sequences ofterminal symbols 是同位语
后面是定语从句
that是关系代词 代替先行词symbols引导定语从句 并作定从中的主语
can result是定从中的谓语
from repeatedly replacing any nonterminal in the sequence with a right-hand side of a production 是定从中的状语.
后面是非限制性定从定修饰production .
.for which the nonterminal is the left-hand side.
句子意思.
从一个由单个可分辨 的 被称之为目标符号 所组成 的句子 开始 ,不讲语法规则 的上下文 详细说明了 一种语言 ,即,(可能是无限的)一组可能的系列目标符号 ,
这些符号可能 是由于 不断地 在 系列中 用产生物的右边 代替任何目标符号 的结果
对于产生物 目标符号 是左边.
太专业,不太懂 供参考.