The result has shows that it is equal in the index number of soft dental calculus between smoker and non-smoker.It is not clear about the difference of the number of gingivitis areas between them.是什么意思_The result has shows that it is equal in the index number of soft dental calculus between smoker and non-smoker.It is not clear about the difference of the number of gingivitis areas between them.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句