Spellings vary slightly, but the general notions of quantification, alternation, and sequencing exist in all EBNF-style language grammars.
拼写稍有不同，但是量化、交替和定序这些一般概念都存在于所有EBNF样式的语言语法中。
Spellings vary slightly, but the general notions of quantification, alternation, and sequencing exist in all EBNF-style language grammars.
拼写稍有不同，但是量化、交替和定序这些一般概念都存在于所有EBNF样式的语言语法中。
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