context-free的用法和樣例：
辭彙搭配
- context-free grammar 上下文無關文法...
- context-free branching rule 上下文無關分支規則,...
- stochastic context-free grammar 隨機上下文無關文法...
- context-free language 上下文無關語言...
- deterministic context-free grammar 確定性上下文無關文法...
- restricted context free grammar 受限上下文無關的文法...
- context-free programmed grammar 上下文無關程序文法...
- context-free parser 上下文無關語法分析程...
- context-free speech 上下文無關語言...
- context-free program 上下文無關程序...
- deterministic context-free language 確定性上下文無關語言...
- context free grammar 上下文無關文法...
- context-free grammar recognizer 上下文無關文法識別程...
