This paper present a retrieval model based on natural language according to pattern database system features. This paper also spell out a series of issues about how to convert natural language into SQL sentence.是什么意思_This paper present a retrieval model based on natural language according to pattern database system features. This paper also spell out a series of issues about how to convert natural language into SQL sentence.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句